System board also know as motherboard

Laptop main board system board

A system board also known as motherboard or mainboard is the main circtuit board in any laptop. Unlike desktop PC system boards, laptop system boards come in thousands of different shapes and sizes. Laptop motherboards are model-specific. In other words, you cannot remove motherboard from a Toshiba laptop and stick it into a Dell laptop. All parts inside a laptop are connected to the system board, either directly via a connector mounted on the system board or through a cable.

In a typical laptop the following ports and components are permanently attached to the system board and cannot be easily removed and replaced without soldering:
1. Hard drive (HDD) connector.
2. CD/DVD drive connector.
3. Memory (RAM) slots.
4. Battery connector.
5. Keyboard connector.
6. Audio (headphone and microphone) jacks.
7. Volume control wheel.
8. USB ports.
9. Eithernet (RJ45 aka network) port.
10. IEEE 1394 (Fire Wire) ports.
11. Video chip and some other components and ports.

System board, processor (CPU) and LCD screen are the most expensive parts in any laptop. In some cases, when one of these three parts fails, it’s cheaper to buy a brand new laptop than replace the failed part. But each case is different so do your research.

System board removal

The system board is mounted inside the laptop base assembly. In order to remove or replace the motherboard, you’ll have to disassemble the whole laptop.

SYSTEM BOARD FAILURE SYMPTOMS.

When a system board fails, you may experience the following most common problems with your laptop. 1. The laptop is completely dead. There are no LED light activity when you press on the power button or plug in a known good AC power adapter. 2. The laptop starts but the video output on the LCD screen or external monitor is garbled. Most likely this is related to the VGA chip failure. 3. The laptop turns on without video on the screen and the power LED starts flashing. 4. The laptop works fine with AC power adapter but will not charge a known good battery. If that’s the case, most likely there is something wrong with the battery charging circuit or DC power jack.

Posted in Laptop parts
310 comments on “System board also know as motherboard
  1. Neil says:

    Hi,
    I have a Dell Inspiron 1720 with bad motherboard. I know how to replace the motherboard, I found instructions. But I don’t know where I can buy a new motherboard. How can I find a new motherboard for my Dell?

  2. admin says:

    Neil,

    I have a Dell Inspiron 1720 with bad motherboard…How can I find a new motherboard for my Dell?

    The best way to find a new motherboard for your laptop would be searching by motherboard part number. In Dell laptops this part number is usually located in the memory compartment. If you remove one of the memory modules, you should see a white sticker with a long string of numbers.
    For example, here’s a string from a Dell laptop: CN-0UK434-48643-84F-2286
    The second set of numbers 0UK434 is the motherboard part number.
    You can find a new motherboard if you Google the part number.

  3. JustAGuy says:

    I think my mobo is fried buy I’m not sure.
    The laptop is dead, it has no lights even with new adapter. Do you think it’s fried mobo?

  4. admin says:

    JustAGuy,
    I cannot tell without looking at the laptop. I think it could be one of the following:
    1. Bad/damaged power jack and because of that the power from the power adapter doesn’t go to the motherboard and it appears to be dead.
    2. Bad motherboard.

  5. JustAGuy, says:

    Nope, it’s not the jack. I removed the motherboard and tested voltage on the jack. I’m pretty sure that power goes to the motherboard. The fuse looks good too.
    I guess I was right, the motherboard is fried.
    Thanks.

  6. Lee says:

    Spilled a glas of wine on the keyboard and my laptop died. No lights at all. I removed battery, turned it upside down and let dry out for 3 days. Still same problem. It’s totally dead. :(

  7. Repair Man says:

    Lee,

    Spilled a glas of wine on the keyboard and my laptop died. No lights at all. I removed battery, turned it upside down and let dry out for 3 days. Still same problem. It’s totally dead. :(

    Most likely the wine went down to the mothreboard and damaged it. It’s necessary to disassemble the laptop and take a closer look at the motherboard. If you see corrosion, you’ll have to replace the board.

  8. Mido says:

    My laptop is Valiant6370iPT manufactured by KDS Computers. While I was using it, it suddenly turned off and I haven’t been able to get it started again since. The only activity is the Num/Scroll/Capslock LEDs flash once and then the laptop remains dead. No fans, no video output, nothing. I suspect the motherboard is simply fried.

  9. Repair Man says:

    Mido,

    While I was using it, it suddenly turned off and I haven’t been able to get it started again since. The only activity is the Num/Scroll/Capslock LEDs flash once and then the laptop remains dead.

    1. It’s possible the AC adapter died while you were working on the laptop. The laptop was running until you had charge in the battery and after that it turned off. Can you test the AC adapter? Make sure it outputs correct voltage.
    2. It’s possible that you have bad RAM module. Do you know if you have two RAM modules installed in your laptop? Try removing them one by one. If one of the modules is bad, the laptop should start when your remove it.

  10. chika says:

    I took my laptop to a repair shop and they said the mobo is fried. I can swap the mobo myself buy where and how I can find a new one? It’s a Toshiba laptop.
    Tnanks

  11. Repair Man says:

    chika,
    Open the memory compartment door on the bottom of the laptop and remove memory modules. There should be a sticker with the part number. Your part number will look something like that: K000007530. One letter followed by nine digits. Your letter and digits will be different and I used this part number just as an example.
    Find the part number and google it. Most likely your search will bring you many places where you can buy a new motherboard for your laptop.

  12. John says:

    Handle motherboard carefully, it’s static sensetive. Wear wrist strap and do not touch components.

    Statick electricity can kill motherboard!!!

  13. Rob says:

    Need help with a Dell Inspiron 1525 notebook. The fan died. Cannot remove from the bottom. Is it on the motherboard? Can I remove motherboard myself?

  14. Repair Man says:

    Rob,
    You’ll find motherboard removal and fan replacement instructions in the service manual for Dell Inspiron 1525/1526 laptops.
    Dell instructions are very clear. I guess you can do it yourself if you are careful enough.

  15. cp says:

    Is it necessary to reinstall everythign after mainboard replacement? Will I loose all my pictures and music?

  16. Repair Man says:

    cp,
    Your data is saved on the hard drive. You don’t have to reinstall the operating system after motherboard replacement.

  17. Lily Adams says:

    I have a Dell XPS M1330. It’s a new laptop and it worked great until I accidentally dropped it from my bed. After that it stopped working. When I turn it on, the laptop starts but nothing appears on the screen. Did I kill the motherboard? What could be wrong with my laptop? Do I have to pay for repair?

  18. Mary says:

    I have a Dell Inspiron 8600. I shut the lid half way down (I don’t think it went far enough to hit the hibernation switch) and it shut off. When I press the power button the LED’s come on for about 5 seconds then shut off. No fans start. Nothing except for a high pitched whine (very faint). I removed the battery for about 5 minutes and tested the ac adapter with a volt meter. Everything checked out fine. Still nothing. I tried it with the battery and no adapter, still nothing.

    I Googled my symptoms and it points to the motherboard. If it’s the motherboard, is there something that I can check and replace on it. I didn’t want to buy a motherboard and not have that be the problem.

    Thanks so much for any help.

  19. Repair Man says:

    Lili Adams,

    I have a Dell XPS M1330. It’s a new laptop and it worked great until I accidentally dropped it from my bed. After that it stopped working. When I turn it on, the laptop starts but nothing appears on the screen.

    I don’t think that you killed the motherboard. It’s very likely that your laptop will not start because one of the memory modules (or both modules) popped up from the slot.
    If there is bad connection between the memory module and motherboard, the laptop will not start.
    I would suggest tacking a closer look at the memory modules. Try reconnecting them just in case, it might help.
    This service manual for a Dell XPS M1330 laptop will be handy if you don’t know how to access and reconnect memory.

  20. Repair Man says:

    Mary,

    When I press the power button the LED’s come on for about 5 seconds then shut off. No fans start. Nothing except for a high pitched whine (very faint). I removed the battery for about 5 minutes and tested the ac adapter with a volt meter. Everything checked out fine. Still nothing. I tried it with the battery and no adapter, still nothing.

    Yep, your description sounds like a problem with the motherboard. Just in case, you might need this service manual for Dell Inspiron 8500/8600 laptops. It explains how to remove and replace the motherboard.

    If it’s the motherboard, is there something that I can check and replace on it. I didn’t want to buy a motherboard and not have that be the problem.

    Your laptop doesn’t start, so you cannot run any test at all.
    You can do visual inspection. For that you’ll have to remove the motherboard and take a closer look at both side, searching for burn marks, blown capacitors, etc…

    Here’s something else you can try. Start taking your laptop apart piece by piece and test it after each removed component:
    1. Remove the hard drive and test the laptop.
    2. Remove the DVD drive and test the laptop.
    3. Remove the wireless card and test the laptop.
    4. Unplug the display panel from the motherboard/video card and test the laptop.
    etc….

    Continue taking it apart until you have only three major components connected: motherboard (with video card), processor, and memory. If you still experience the same problem, most likely it’s bad motherboard.

    By the way, before you start, try reconnecting the memory module. If you have two modules installed, try removing them one by one and test the laptop with each one separately. I doubt it will help, but try it just in case.

  21. Mary says:

    Thanks Repair Man,

    I will take it a part at work tomorrow (I’m an electronic assembler)and let you know if I find anything. I like the advice about trying the laptop after I remove each part.

    Mary

  22. Repair Man says:

    Mary,

    I like the advice about trying the laptop after I remove each part.

    After you unplug the display cable from the motherboard, you can test the laptop with an external monitor attached to the VGA port. Normally, the external monitor should be detected automatically.

  23. Gkrev says:

    I’m working with an HP 5100CTO laptop with an AMD Turion 40 CPU. Which belonged to my son. He’d been having trouble with what seemed to be heat-related shutdowns which he alleviated by throttling back the CPU speed. Then it shut down completely. All it does is turn on the power LED. No boot, no fans, no drives, no display. I’ve tried everything suggested so far. Now I’m thinking of replacing the CPU and/or system board and wondering which I should try first. Will installing a bad CPU in a new system board blow the board? Will installing a new CPU in a bad system board blow the CPU?

  24. Repair Man says:

    Gkrev,

    Then it shut down completely. All it does is turn on the power LED. No boot, no fans, no drives, no display.

    Probably you’ve done it already but have you tried reseating memory modules? If you have two modules installed, you can try removing them one by one and start the laptop with each one separately.

    Now I’m thinking of replacing the CPU and/or system board and wondering which I should try first.

    You’ll have to guess but from my experience motherboards fail more often. I’ve been working with laptops for over four years now and so far I’ve replaced only three or four failed CPUs but I’ve replaced hundreds (if not thousands) failed motherboards. If you have to guess, I would try the motherboard first.

    Will installing a bad CPU in a new system board blow the board?

    I don’t think so. As I mentioned above, I’ve seen only a few failed CPUs. I think in the worst case scenario the laptop simply will not boot.

    Will installing a new CPU in a bad system board blow the CPU?

    Nope, I installed many good working CPUs into DOA motherboard and never had a problem. You just cannot start the system until you replace the motherboard.

  25. kamel says:

    Well I did see one case where trying 378 pin CPUs on a bad desktop motherboard burned the CPUs and an other case where trying a bad 478 pin CPU burned a good motherboard.

  26. Repair Man says:

    kamel,

    I did see one case where trying 378 pin CPUs on a bad desktop motherboard burned the CPUs

    I installed many different DOA motherboards into laptops with good working CPUs and it never happened to me. Maybe I was lucky.

    an other case where trying a bad 478 pin CPU burned a good motherboard.

    As I mentioned in the comment 24, I’ve seen a very few failed CPUs so far. I guess it’s possible that installing a bad CPU can damage the motherboard, it just haven’t happened to me yet.

  27. Danny says:

    My laptop does on but did not start. A few component like fans and LED light work like usual. But no screen image appears and no response. System does not boot at all. Checking RAM found no problem. What is my problem?

  28. Repair Man says:

    Danny,
    First of all, try this. Turn off the laptop, unplug the AC adapter and remove the battery. Now wait for a few minutes, then connect the AC adapter and try turning it on. Sometimes it helps.

    By the way, how did you check the RAM? Did you try replacing the memory module with a new known good one? Did you try installing the memory module into the the empty slot, if you have any of course? Your description sounds like a memory related problem.

    Try removing hard drive, DVD drive, other modules you can access and starting the laptop without them.

    If still no luck, there could be a problem with the motherboard.

  29. Danny says:

    My HP ZE4900 laptop will not come on. The led for the battery comes on when its plugged into the charger, but when I press the power on button the power led will come on and go off. I have tried taking everything out one by one to figure something out but I am not having any luck. Any ideas?

  30. Repair Man says:

    Danny,

    I have tried taking everything out one by one to figure something out but I am not having any luck.

    Did you test the AC adapter? Does it output correct voltage? Other than that, it sounds like a problem with the motherboard.

  31. f-temp says:

    Hello all,

    My Toshiba Satellite M105-S3041 motherboard failed. Is it possible to install a toshiba motherboard for a different model? or does it have to be the exact same model?

    I am trying to lookup a price but i am having a really hardtime and i am not sure how to search. By searching for Toshiba Satellite M105-S3041 motherboard on ebay i dont get any results.

    What do you think the best course of action would be? accept a $100 offer for it?

    Can anyone help?

  32. Repair Man says:

    f-temp,

    My Toshiba Satellite M105-S3041 motherboard failed. Is it possible to install a toshiba motherboard for a different model?

    I wouldn’t do that. I would recommend installing the same motherboard as the original one.

    I am trying to lookup a price but i am having a really hardtime and i am not sure how to search. By searching for Toshiba Satellite M105-S3041 motherboard on ebay i dont get any results.

    The best way to find a replacement motherboard would be searching by the Toshiba part number from the old motherboard. In most cases you’ll find the part number on a sticker in the memory compartment. It will look something like that: K000039490, K000038660, K000037080 or another number but with same pattern – one letter and nine digits. Also, sometimes Toshiba might use a different number which looks like this one: 46139551L05 or something like that.

    What do you think the best course of action would be? accept a $100 offer for it?

    First, make sure that’s exactly what you are looking for. What if you buy something you don’t need? If you can find the Toshiba part number, you can google it and find more results.

    Can anyone help?

    I can if you can give me the laptop model number because there are different M105 laptops using different motherboards. Give me the number and I’ll look up the motherboard part number. After that you can search by the part number.

  33. Stan says:

    Hi. I’m having a problem with my 2 years old Compal laptop. The screen will suddenly go blank and then a few moments later, it appeared to have been powered off completely. It couldn’t be over-heating problem as I’ve just cleaned the fan and the ventilation hole. It’s not the power supply either.

    Could it be my RAM or motherboard? I only have 1 RAM chip installed. I need advice from you guys desperately. Hopefully it’s not my motherboard that’s giving problem… It would cost alot to replace a motherboard..

  34. Repair Man says:

    Stan,

    I’m having a problem with my 2 years old Compal laptop. The screen will suddenly go blank and then a few moments later, it appeared to have been powered off completely.

    In order to narrow down the problem you’ll have to test your laptop with a desktop monitor connected to the laptop. Check out the external video. Does it work with an external monitor?

  35. Stan says:

    Checked several times already, I’m able to connect to an external monitor, but the problem occured again. This time, when the problem occur, both the laptop LCD n the external monitor goes blank. Does this mean a motherboard failure?

  36. Stan says:

    Update: Now it wont even turn off. When the screen goes blank, the CPU fan appears to be still working and the power LED still on. And after 10 minutes, it still never shuts down. On 3 occasions, it didnt even made it pass POST. Motherboard failure or just RAM failure? Btw, how much would it cost to change the motherboard?

  37. Repair Man says:

    Stan,
    I would definitely try replacing the RAM module first, it’s way cheaper than replacing the motherboard. I think that could be just a bad RAM module.

  38. Stan says:

    Repair Man,

    Thanks alot for your advice. The most “mysterious” thing is that it doesnt happen all the time consistently. Sometimes it’ll work fine for a few days before the problem occurs again. When it occurs, after awhile, or after some knocking here and there abit, it appears to be working just fine again. (and the cycle continues).

    I’ll look at it for maybe a week more. If problem re-occurs, maybe I should send in for repair by an actual technician as I’m not certainly not at that level yet. Anyway, thanks alot for your advice.

  39. Repair Man says:

    Stan,

    The most “mysterious” thing is that it doesnt happen all the time consistently. Sometimes it’ll work fine for a few days before the problem occurs again. When it occurs, after awhile, or after some knocking here and there abit, it appears to be working just fine again.

    Try running memory test when the laptop works. Boot from the Memtest86+ and let the test run overnight. If you get memory errors, try replacing the RAM module.

  40. Stan says:

    I’ve tried it before. The screen will also go blank while doing so. It doesn’t shut down, the CPU fan is still working.

    But on 2nd retry it seemed to be ok. I was using the laptop this morning and while the CPU is processing something, the screen again goes blank. But the CPU still appears to be processing something as the LED still lights up. And it just stays there, no shut down, nothing, even the CPU Fan is still working in there.

    I shall start to backup my data tomorrow morning as I think I might drop it off to a nearby computer store sooner rather than later. And I still desperately hope that it is the RAM that is giving problems.

  41. Stan says:

    Oh yeah, another symptom that I found is that once the screen goes blank, it dont seemed to response to anything anymore. Not even ejecting the DVD drive, not even me simulating the shutdown through some keystrokes, except the power button of course.

  42. James says:

    Hi. After upgrading my RAM to 3GB from 1GB, I’m having some problem with standby and hibernating. It used to be working fine as I frequently use the features to save some battery power. Now, when I tried to hibernate, it will show the black coloured “hibernating” screen and when it’s done, the laptop will turn off just like normal hibernating. But within 5 seconds later, it will turn on again (waking up from hibernating). As for standby, it will show the blue “Preparing to standby” and then the whole thing just goes off like that.

    What do you think is the problem here? I’m pretty sure it’s not software related as I’ve tried reformatting my hard disk to no avail. A quick check in cmd using “powercfg /availablesleepstates” only show “Standby (S3) Hibernate” available while S1 and S2 are not available. The weird thing is that I don’t have this hibernating problem when using the battery instead of the AC power, even though the standby problem still exist. Did I accidentally damaged some parts while adding a 2GB RAM in? I don’t think so as I’ve done this quite a number of time.

  43. Keeth says:

    Hi,after all the good advice I read on this site, I thought I’d give it a shot. I have a M40x (= M35,M40) Toshiba laptop with some very strange issues. It has become kind of an obssession to get it working again.
    The laptop seems to randomly decide wether to switch on when i press the power button or not. Sometimes it just boots (and once its running all is fine) but you never now if it’ll be the last time. To trace the problem, i completely stripped the laptop down to its mobo, cpu and ram. Power leds work, battery charge led sometimes (not a power jack problem). When i connect the power the fan gets a jolt of power every 5 seconds even if i don’t turn the laptop on. Sometimes i can hear some coil or capacitor resonance coming from several places on the mobo (mainly from under the cpu: the capacitors in the square formed by the socket). There is definately someting wrong with the mobo’s power electronics but i don’t know where to start. Do you have some advice as to how to pinpoint the problem. Which components/ICs?

    Cheers,
    Keeth

  44. Guzunoi says:

    Hello

    I have a Toshiba Satellite A215, been using it for 1 year and a half. One day, out of a sudden, it just made a short “pop” sound and crashed. Can’t turn it on ever since. More than this, the small lights showing me the AC connection, HDD usage, battery status etc. are also dead. Normally, the battery one was all the time on, even if the laptop was off-line. Plus I’ve noticed that when I plug the charger, it starts beeping. The charger is fine, it was tested on other laptops and I also tried using another charger for my laptop, without any result.
    My warranty is gone, so I can’t rely on this. I brought the laptop to the official Toshiba service, they told me they have to replace the mother board (this would cost me more than a new laptop). They do not work with motherboards, they just replace them. My question would be if there is any chance to repair the motherboard (assuming that the power circuit chip is gone, or something like that). Do you know something about this?

    Thank you for your time

  45. Repair Man says:

    James,

    After upgrading my RAM to 3GB from 1GB, I’m having some problem with standby and hibernating. It used to be working fine as I frequently use the features to save some battery power. Now, when I tried to hibernate, it will show the black coloured “hibernating” screen and when it’s done, the laptop will turn off just like normal hibernating. But within 5 seconds later, it will turn on again (waking up from hibernating). As for standby, it will show the blue “Preparing to standby” and then the whole thing just goes off like that.

    What if you downgrade the laptop back to 1GB? Will it start working normal again?
    Go to the manufacturer’s website and find out if there is a newer BIOS available. Try updating the BIOS.

  46. Repair Man says:

    Keeth,

    I have a M40x (= M35,M40) Toshiba laptop with some very strange issues…There is definately someting wrong with the mobo’s power electronics but i don’t know where to start. Do you have some advice as to how to pinpoint the problem. Which components/ICs?

    It’s hard to tell. Could be anything.
    Most likely you’ll have to replace the motherboard.

  47. Repair Man says:

    Guzunoi,

    I have a Toshiba Satellite A215, been using it for 1 year and a half. One day, out of a sudden, it just made a short “pop” sound and crashed. Can’t turn it on ever since. More than this, the small lights showing me the AC connection, HDD usage, battery status etc. are also dead.

    It’s possible that one of the capacitor went bad and has to be replaced.

    is any chance to repair the motherboard (assuming that the power circuit chip is gone, or something like that). Do you know something about this?

    I guess you can disassemble the laptop, remove the motherboard and search for any damaged components. You heard a short “pop” when it stopped working, so I assume it’s a blown capacitor. There is a chance to fix the motherboard by replacing the damaged capacitor.

  48. James says:

    Even if I downgrade it back to 1GB now, the problem is still there. There is indeed a new BIOS version available but I don’t know how to flash the bios.

    Is there a chance of me damaging the components while installing the RAM?

  49. Repair Man says:

    James,

    Even if I downgrade it back to 1GB now, the problem is still there. There is indeed a new BIOS version available but I don’t know how to flash the bios.

    There should be instructions posted on the manufacturer’s website. In most cases you just download a ZIP or EXE file to your computer and run it from there. Make sure the laptop is connected to the main power while upgrading the BIOS. Find and read instructions, it’s very important to follow the procedure correctly.

    Is there a chance of me damaging the components while installing the RAM?

    I don’t think so. If I understand correctly, your laptop still works fine, except the hibernation and stand by.
    I would try upgrading the BIOS first and proceed from there. If your laptop is still under warranty, you can call customer support line for help.

  50. gautam kumar says:

    hello sir,
    I need a laptop motherboard pcb design layout through which i can identify the signal flow for each component and each circuitry.tis will help me to find the fault and to rectify the problem.
    kindly give me some suggestions on laptop motherboard component testing.
    also help me with the websites.

    gautam kumar

  51. Repair Man says:

    gautam kumar,

    I need a laptop motherboard pcb design layout through which i can identify the signal flow for each component and each circuitry.tis will help me to find the fault and to rectify the problem.

    I doubt that you can find a laptop motherboard PCB design layout. Usually, laptop manufacturers do not share information like that.

  52. Confused man says:

    Hi,
    My laptop totaly dead. I already fix with the dc power jack, the result LED for power is on, but still the laptop can’t on after so many time i push the on button. Can u help me in this matter?
    Thanks..

  53. Repair Man says:

    Confused man,

    My laptop totaly dead. I already fix with the dc power jack, the result LED for power is on, but still the laptop can’t on after so many time i push the on button.

    So, when you push on the power button, do you see any other LEDs lighting up? Or the power LED light is the only one working even after you push on the power button?

  54. qua says:

    Hello, I apologize for the long post. I just wanted to describe the problem thoughrougly. I have (had??) a Toshiba Satellite M65 S9092. I normally used my laptop without the battery unless I really needed it. A week ago I needed the battery and used the battery until it is completely discharged. First problem occurred at this point. I was using a Linux system (first time with the battery)and although the power manager settings were set to hibernate when the battery charge levels are critical, it did not. My laptop just turned off as if I plugged the AC cord when on AC power only. Later when I tried to turn it on without the battery, I could not. The power led turned on for about 5-10 seconds and the fan starts working but noting else, then the fan and the power led turns off. After a number of tries I could boot with no problem. When I put the battery in there was no problem with the start up either. Once it worked, restarting was never a problem, it was as if the computer did not start when it cooled down. Then gradually it became harder to turn the laptop on even with the battery and finally it never turns on now. Just lights on, sometimes fan spins for a couple of seconds and occasionally there is the usual noise from the DVD drive. Then everything goes off. There is no problem with battery charging either because I can see the color coded led changes according to charge status. I disassembled it following your guide suspecting some dust/dirt in cooling system but no chance. So I suspected the motherboard. I removed all parts except cpu, graphics card, RAM (also tried removing the RAMs and changin slots etc.) and power cable (and the stuff on the motherboard that I could not remove like usb,PCI and so on). The sympom is the same, lights fan and nothing. I am still hoping there is some kind of a battery problem and not the motherboard since gradual increase of the problem resembled a battery dying. Please tell me there is a reason for this you can think of and of course a solution. My machine is still disassembled waiting for your reply:) Thanks in advance.

  55. Repair Man says:

    qua,

    The power led turned on for about 5-10 seconds and the fan starts working but noting else, then the fan and the power led turns off. After a number of tries I could boot with no problem.

    Usually a laptop starts acting like that when there is a problem with memory or motherboard.

    I removed all parts except cpu, graphics card, RAM (also tried removing the RAMs and changin slots etc.) and power cable (and the stuff on the motherboard that I could not remove like usb,PCI and so on). The sympom is the same, lights fan and nothing.

    So, you tried removing RAMs one by one and testing the laptop with each RAM module in different slots and it didn’t help. That tells me that most likely you have a bad motherboard.

  56. Brooke says:

    Hi, I have a Dell XPS 1330. It had been working fine until it was accidentally dropped from a bed. After it was dropped it would not power on and the battery is fully charged and the power cord is also working properly. I have tried taking the battery out and powering it that way and such and I have not had any luck. When I push the power button it does not turn on or make any noises as if it even wanted to power on but there is a flicker on one of the side lcd lights. Do you think it is the motherboard??
    Thanks

  57. rgarcia1965 says:

    Do you know what type of mini pci wi-fi card I can use to install in my Toshiba 1415-SS173?

  58. Repair Man says:

    Brooke,

    After it was dropped it would not power on and the battery is fully charged and the power cord is also working properly. I have tried taking the battery out and powering it that way and such and I have not had any luck. When I push the power button it does not turn on or make any noises

    It’s hard to tell what is wrong. Could be just a loose connection somewhere inside.
    When I receive a dropped laptop for repair, first of all I open it up and reseat all internal cables, cards and connectors. Make sure the CPU and memory are seated correctly.
    If you have nothing to lose, you can open it up (as it explained in the service manual) and try reseating internal cables and cards.

  59. Repair Man says:

    rgarcia1965,

    Do you know what type of mini pci wi-fi card I can use to install in my Toshiba 1415-SS173?

    I guess it’s a Satellite 1415-S173 (not SS173), right? Yes I know. It’s an Agere Systems MiniPCI card. Toshiba part number is P000339520. Google the part number and you’ll find it.

  60. Brooke says:

    Thanks we took it all apart and put it back together and now it works…thanks a lot

  61. ram says:

    i had on acer laptop, when power on the display shows logo screen and than hanging. but the cpu cooling fan is running. what will be the problem pls. guide me

  62. Repair Man says:

    ram,

    i had on acer laptop, when power on the display shows logo screen and than hanging. but the cpu cooling fan is running. what will be the problem

    1. Try entering the BIOS setup menu by pressing Esc, or F1, or F2, etc… (I don’t know your laptop model). Can you enter the BIOS?
    2. Could be bad hard drive. Take a look at the hard drive LED light. Is it on all the time? You can remove the hard drive and try booting the laptop from a live Linux CD. I use Knoppix. Can you boot from the Linux CD?
    3. Could be bad memory. Try removing memory modules one by one and start the lapto with each memory module separately. Can you?

  63. Murphy says:

    Okay, so heres how it is. I accidentally spilled a liquid on my laptop and it completely shut off. I cleaned it up but it still does not work at all. When i press power key, the power light turns on for about one second then turns off again. My model is an HP Pavilion dv6000. If you could email me to see if you know what the problem is that would be great!

  64. Repair Man says:

    Murphy,

    I accidentally spilled a liquid on my laptop and it completely shut off. I cleaned it up but it still does not work at all. When i press power key, the power light turns on for about one second then turns off again.

    Sounds like a problem with the motherboard, apparenlty it’s been damaged when you spilled a liquid. Most likely you’ll have to replace the motherboard.
    Before you do that, you’ll have to remove the top cover and take a closer look inside the laptop. It’s possible some other parts have been damaged too.

  65. Scott Pulido says:

    Hi. I was just curious about my motherboard. I just sent my computer back to HP. I had a horrible experience with their customer service and repair department. In short, don’t buy a HP. But they have sent me back my computer and it now at least turns on. My question deals with the fact that I still have all my information from before I sent it in. Did they really replace the motherboard as they said? I was told by customer service that my Data would be lost and so I backed it up on my portable HD. Just curious to see if I got taken for a loop and need to send it back asap. Thanks for the info and help. Appreciate it. Scott

  66. Repair Man says:

    Scott Pulido,

    My question deals with the fact that I still have all my information from before I sent it in. Did they really replace the motherboard as they said?

    When you replace the motherboard it’s not necessary to erase the hard drive. If they said they replaced the motherboard, they did so.

    I was told by customer service that my Data would be lost and so I backed it up on my portable HD.

    They say as a precaution. In some cases it is necessary to reinstall software but apparently not in your case.
    They replaced the motherboard and it fixed your original problem, so they didn’t reimage the hard drive.

    Just curious to see if I got taken for a loop and need to send it back asap.

    I think you’ll be fine, just make sure to test the laptop properly. Most likely they installed a refurbished motherboard, so make sure everything operates properly before it runs out of warranty.

  67. shilp says:

    Due to improper battery placement (my mistake) the display of my syatem has gone bad… through your article i can guess that the video card of the system is corrupted. can you tell me if the video chip of the system can be repaired or replaced. I have Compaq v6000 notebook model.
    I will appreciate your help.

    Thanks and Regards
    shilp

  68. Repair Man says:

    shilp,

    Due to improper battery placement (my mistake) the display of my syatem has gone bad… through your article i can guess that the video card of the system is corrupted.

    I’m just curious. How can you damage the video card in a laptop by improper battery placement?

    can you tell me if the video chip of the system can be repaired or replaced.

    Nope, you cannot replace the chip. If it’s bad, you’ll have to replace the motherboard (I assume the video chip is integrated into the motherboard).

  69. shilp says:

    Actually waht happened in the morining i remove my battery and put it again. but the way i put the battery back was not proper…means it hinges were out and the place where battery fits n supplies power was in. so my laptop gave 3-4 beeps while i was working. but i did not realize that something may be wrong with batteries. system worked normally. but when i again stated my sutem in the evening eveything has gone bad…. means the usual boot up screen which is usaually blue and black in most systems was now florescent green…i tried alot by turning my sytem on and off…but problem was not resolved. later i realized that batteries were not properly placed. i replaced it properly but sytem could never recover till now.

  70. shilp says:

    may it be possible that improper voltage supply the motherboard has got damaged.??????

  71. Biruk says:

    Hi
    I have a Satellite M40 (PSM40).While I was flashing the Bios from windows it shutdown automatically before finishing.Now when i press power button,Noting happens for a few secs(slower than usual) power on for a few sec and turns back off,fan spins but No display.I’ve tried to reflash it using TOSHIBA traditional BIOS Update but notting seems to work.what do u suggest I do with it next?pls help cos my project is in that laptop.

  72. Repair Man says:

    Biruk,

    While I was flashing the Bios from windows it shutdown automatically before finishing.Now when i press power button,Noting happens for a few secs(slower than usual) power on for a few sec and turns back off,fan spins but No display.

    Sorry for a bad news, but if your laptop shutdown while updating the BIOS and didn’t finish the process, most likely the BIOS is corrupted. You’ll have to replace the motherboard.

    I’ve tried to reflash it using TOSHIBA traditional BIOS Update but notting seems to work.

    You cannot reflash the BIOS again because the laptop doesn’t start after it failed.

    what do u suggest I do with it next? pls help cos my project is in that laptop.

    If you have important data saved in that laptop, you get recover it.
    1. Remove the hard drive. I believe you have an IDE (not SATA) hard drive installed into your laptop.
    2. Purchase an external USB enclosure for notebook IDE hard drives and install your hard drive into the enclosure.
    3. Connect this enclosure to another working computer – laptop or desktop.
    4. The new drive will be detected automatically and you can access data.

    Again, if the laptop failed while updating the BIOS, you’ll have to replace the motherboard.

  73. Biruk says:

    hey
    well ….Thanks man
    I guess its better to buy a new laptop than replacing the main board,
    Thanks anyways…keep in touch

  74. Manda Yugana says:

    I have Toshiba Satellite M105 S3002 laptop.
    My AC adapter was producing noise when it charges the battery, so I took it to a repair center (not Toshiba Authorized Service).

    After my AC adapter had been repaired, the noise is gone, but the AC adapter only works if the laptop is turned on. If the AC adapter plugged into the laptop when it is turned off, nothing happens (even the power indicator light).

    My friend said that the power chip in my mainboard has been broken.

    Is it true? Is this problem caused by my repaired AC adapter?

  75. Repair Man says:

    Manda Yugana,

    Is this problem caused by my repaired AC adapter?

    Did they repair or replaced the adapter. I don’t think that you can repair this adapter because it’s sealed unit. The adapter is not designed to be repaired.

    After my AC adapter had been repaired, the noise is gone, but the AC adapter only works if the laptop is turned on. If the AC adapter plugged into the laptop when it is turned off, nothing happens (even the power indicator light).

    Did this light work before they repaired the adapter? Does it actually charge the battery when the laptop is turned off (even though the power indicator light is off)?
    Can you start the laptop from the AC adapter when the battery is removed?

  76. Manda Yugana says:

    Repair Man : Did they repair or replaced the adapter. I don’t think that you can repair this adapter because it’s sealed unit. The adapter is not designed to be repaired.

    Manda : They repaired and resealed it. Some capacitors replaced and small part of circuit removed.

    Repair Man : Did this light work before they repaired the adapter?

    Manda : Yes, the light worked before and sometimes after. But then it didn’t work at all.

    Repair Man : Does it actually charge the battery when the laptop is turned off (even though the power indicator light is off)?

    Manda : No, even though there is electricity in laptop’s metal part (I test it with a test pen).

    Repair Man : Can you start the laptop from the AC adapter when the battery is removed?

    Manda : Here’s the detail.
    1. If I plug the adapter when the laptop is turned off (w/ or w/o battery), it doesn’t work (and doesn’t charge the battery)
    2. If I turn on the laptop (w/ battery) then plug the adapter, it works (and also charges the battery)
    3. No (2) + then turn the laptop off, the battery will be charged.
    4. No (2) + then remove the battery, the laptop will remain on.

    It looks like the adapter needs a “help” from the laptop power to work. After the laptop is turned on, everything works fine.

  77. Repair Man says:

    Manda Yugana,

    It looks like the adapter needs a “help” from the laptop power to work. After the laptop is turned on, everything works fine.

    It’s hard to tell what’s going on. I don’t know what they did with the AC adapter, maybe it’s not working properly. The only way to find out is testing the laptop with another known good AC adapter. If you still have the same problem, there is something wrong with the motherboard.
    You can find a new AC adapter for your laptop if Google one of the following part numbers: K000037400, K000041650, K000040330, K000043540. The all work with Satellite M105 laptops.

  78. phil says:

    turns out the other day, accidently got water into my laptop..i let it dry and was able to get it working, it worked for about an hour till it cut off. now i’m able to charge and start it up, but nothing seems to be showing on the screen. i hear the computer running but seems to stop making any noises after about 15 seconds. help me out?

  79. Repair Man says:

    phil,

    turns out the other day, accidently got water into my laptop..i let it dry and was able to get it working, it worked for about an hour till it cut off. now i’m able to charge and start it up, but nothing seems to be showing on the screen. i hear the computer running but seems to stop making any noises after about 15 seconds.

    Apparently the water went down to the motherboard and damaged it. It’s necessary to disassemble the laptop and take a closer look at the damage. Most likely you’ll have to replace the motherboard.

  80. Ahamed Affan says:

    i have a dell m1530 and its ethernet port is busted is it possible to replace the ethernet port in this ? or will i have to replace the whole motherboard?

  81. Repair Man says:

    Ahamed Affan,

    i have a dell m1530 and its ethernet port is busted is it possible to replace the ethernet port in this ? or will i have to replace the whole motherboard?

    The eithernet port is soldered to the motherboard. I guess you can unsolder the busted port and solder a new one, but I don’t know where to buy a new one.
    1. You can search for a damaged motherboard on eBay. If you find one, unsolder the eithernet port and solder it to your motherboard.
    2. You can use a PCMCIA network card which is about $20-30. Insert this card into the PCMCIA port on the laptop and you get another eithernet port on the card.
    3. Replace the motherboard.

  82. juan says:

    i have a compaq presario f750us notebook pc that may have its motherboard fried. it fell of my bed and landed on top of its key board. now it wont turn on but the led charging light turns on so i know it cant be my adapter. so now im trying to take my laptop apart but im stuck on taking the case cover of. do u know of any videos or manuals (other than the company’s manul) that can help me?

  83. mark says:

    Excellent articles.

    I have a friends laptop here. Light comes on whern push on button but it doesn’t stay on. There’s no fan, hard drive lights or other activity. She spilled coffee into the keyboard. Is the most likely scenario a fried motherboard?

  84. Repair Man says:

    Mark,

    I have a friends laptop here. Light comes on when push on button but it doesn’t stay on. There’s no fan, hard drive lights or other activity. She spilled coffee into the keyboard. Is the most likely scenario a fried motherboard?

    Most likely yes. If it would be just a bad keyboard, the laptop would start. I think she damaged the motherboard.

  85. Abi says:

    Hi, I have a question about my laptop. Just yesterday, I tried to switch it on. The lights came on but the screen was black (like nothing was loading). I had to manually shut it off. The second time was successful but I had to restart due to an update. The screen froze and I had to manually switch it off.

    I already did the whole remove-battery-and-use-only-adapter. It worked on the second time I switched it on.

    Today, I switched on my laptop (with battery and adapter) and it worked great. I thought it was just a case of simple overheating. The second time I turned it on, the same prolblem occured. It was only after the third try that the laptop booted up correctly.

    Do you think it’s a case of the motherboard?

  86. kokting says:

    hi I’m having problem with my ACER travelmate 290
    can’t power up
    when I press the power button all the light blink awhile and nothing work (fan, HD, LCD, Wifi, charging LED)
    try reseating the RAM/HD/DVD Rom but not works

  87. Repair Man says:

    kokting,

    I’m having problem with my ACER travelmate 290 can’t power up
    when I press the power button all the light blink awhile and nothing work

    Which light is blinging? The power LED or battery charge?
    It’s possible that you have a bad AC adapter. You can test the adapter with a voltmeter. Make sure it outputs correct voltage.

  88. vico says:

    how can i use my voltimeter to test my motherbord of my laptop to know where the problem is? coz i use it to test power after the power jack on the board and i found that the power connected and it read it 19v although the laptop is dead and when i press the power button Nothing happen so please Help? laptop is Acer

  89. Tito says:

    i have a panasonic laptop that fell out on the table and now I can even turn it on

  90. Royce420 says:

    I have an Dell Inspiron 1720 laptop. One day the video just stopped suddenly. I have replaced the lcd and ribbon cable with no improvement. I don’t think it is the inverter because I can not see anything at all, not even the faintest item on the screen. I have the 8600m video card that can be replaced without replacing the system board. The VGA out still works. If the VGA out works, is it running off of some onboard video chip or is it still running through video card? Any help? Thanks.

  91. George says:

    Hi! I have a gateway model M-1624, i need replacer the motheboard, but not find the part. help me please to find!

  92. Jane Thomas says:

    I have a Dell 1330 and I started having a problem with laptop crashing. Suddenly purplish haze tracks would take over the monitor and then it would crash. I used to be able to turn it off and on when this would happen but now the that won’t work. I just get a gray lighted screen with vertical lines. I hooked my laptop to my desktop monitor and had the same problem. I called Dell and they ran some tests via the phone and came to the conclusion that I needed a new motherboard, but they had me buy a battery also. does anyone know why I needed a battery? The rep told me not to connect the old battery once the new motherboard was installed. What does one have to do with the other?

  93. Repair Man says:

    Royce420,

    The VGA out still works.

    Can you enter the BIOS setup menu and check video settings in there. Maybe the internal monitor got disabled somehow? Set BIOS to defaults.

    I can not see anything at all, not even the faintest item on the screen

    Start your laptop in the dark room. Take a closer look at the LCD when the laptop starts. Can you see the LCD changing color at all? Is it completely dead?

    If the VGA out works, is it running off of some onboard video chip or is it still running through video card?

    The signal still generated by the video card but it might go through a different channel when you use the VGA output.
    Maybe there is a problem with the connector where you plug the video cable?

  94. Repair Man says:

    George,

    I have a gateway model M-1624, i need replacer the motheboard, but not find the part.

    Search for any stickers on the motherboard. Look in the RAM compartment, under the keyboard, etc…
    Google any number you can find. It’s possible one of them is the motherboard number.

  95. Repair Man says:

    Jane Thomas,

    I used to be able to turn it off and on when this would happen but now the that won’t work. I just get a gray lighted screen with vertical lines. I hooked my laptop to my desktop monitor and had the same problem. I called Dell and they ran some tests via the phone and came to the conclusion that I needed a new motherboard, but they had me buy a battery also. does anyone know why I needed a battery?

    If you get the same gray lighted screen with vertical lines on both internal and external monitors, most likely there is a problem with the video card. In most laptops the video card is integrated into the motherboard and if that’s the case the whole motherboard has to be replaced.
    I have no idea why they sold you the battery.
    The laptop should run fine even if you have no battery installed. I rally doubt that your video problem is related to the battery.

  96. Jason says:

    Hi, I have one IBM R51 laptop. One day it was just dead. When I plugged adaptor, only battery light on. Nothing else no sign of life. I striped all the parts, and plugged the power and still nothing comes to live. I test the ram it is good as well. I wonder if the Processor’s problem? but I didn’t hear beep or anything since the laptop has no life though.

    Help please

  97. Repair Man says:

    Jason,

    I have one IBM R51 laptop. One day it was just dead. When I plugged adaptor, only battery light on. Nothing else no sign of life. I striped all the parts, and plugged the power and still nothing comes to live. I test the ram it is good as well. I wonder if the Processor’s problem? but I didn’t hear beep or anything since the laptop has no life though.

    Sounds more like a problem with the motherboard. From my experience I can tell that CPU failures are very rare. In 5 years I’ve seen only 5 or 6 failed CPUs but hundreds of failed motherboards.

  98. Varun says:

    Hi,

    I have an IBM R51 laptop. The usb ports/ethernet port/ pcm slot do not work due to a spark in the circuit. The CD rom will write CDs only sometimes and now the keyboard has stopped working.

    It starts working by itself.

    1.) I am thinking about replacing the keyboard so atleast my work can resume.
    2.) I want to replace the motherboard but not spend too much many as it is an old laptop. Are there any other motherboards that I can use on the R51?

    Thanks in advance,
    Varun

  99. Michael Bake says:

    Hi. I have a Dell XPS 1330. The fan has started running in high all the time – although sometimes it will surge from low to high but then just stay on high. I did a Dell self diagnosis and it showed 3 items that required attention.
    1) Smart system test – failed
    2) Systemboard RTC rollover test – failed
    3) CMOS pattern test – failed
    I have not idea what this all means but presume it has something to do with the fan speed.
    Thoughts ?
    Thanks

  100. Repair Man says:

    Michael Bake,

    I have a Dell XPS 1330. The fan has started running in high all the time – although sometimes it will surge from low to high but then just stay on high.

    I assume the laptop still works fine, except the fan?

    It’s possible that all error messages you are getting are not related to the fan. Maybe the fan runs all the time because the heat sink is clogged with dust and the laptop overheats. Try cleaning the cooling module first. The cooling fan can be accessed when you remove the RAM cover from the bottom of the laptop. Remove the cover and blow off the dust.
    Test if the fan runs normal now.

  101. Repair Man says:

    Varum,

    and now the keyboard has stopped working.

    It starts working by itself.

    Try reconnecting the keyboard to the motherboard. Maybe the keyboard cable is not making good connection with the motherboard and reseating the connection will fix your problem.

    I want to replace the motherboard but not spend too much many as it is an old laptop. Are there any other motherboards that I can use on the R51?

    Unfortunately you cannot do that. Laptop motherboards unlike desktop motherboards are model specific. You’ll have to use a motherboard designed for your ThinkPad R51.

  102. Bhagyanath says:

    i hava TOshiba Equium A60.it does not work.fan does not start..makes no sound..what mite the reason for its failure and how can i repair it..

  103. bhagyanath says:

    at times its fan starts..but dont show anythin..

  104. Repair Man says:

    Bhagyanath,

    i hava TOshiba Equium A60.it does not work.fan does not start..makes no sound..what mite the reason for its failure and how can i repair it..

    Toshiba Equium A60 is similar to Satellite A60.

    From your description it sounds like the laptop is getting power but will not power up. First of all, I would check the memory module. This laptop has one memory module integrated into the motherboard and another module can be installed into the memory slot. Do you know if in your laptop the memory slot is populated? Try removing the memory module from the slot and turn on the laptop. If you still experiencing the same problem (power light is on but no activity from the hard drive, LCD, etc…) it’s possible that your motherboard is dead.

  105. bhagyanath says:

    i think my motherboard is dead..wer can i get a new motherboard from..is ther any site in particular..

  106. bhagyanath says:

    and can ya show me how to open ma laptop..or disassemble ma laptop..i don wanna mess ma laptop..so can ya provide some pics as well…

  107. bhagyanath says:

    i hav a IBM T22 laptop…its not working properly..wen i switch on the fan starts running but nothing happens as such..what mite be the problem..help me..

  108. Repair Man says:

    bhagyanath,

    i hav a IBM T22 laptop…its not working properly..wen i switch on the fan starts running but nothing happens as such..what mite be the problem.

    First of all, I would suspect the memory failure. Try reconnecting the memory module. If you have two modules, remove them one by one. Test the laptop with each module separately. One of the memory modules could be bad.

  109. Repair Man says:

    bhagyanath,

    and can ya show me how to open ma laptop..or disassemble ma laptop..i don wanna mess ma laptop..so can ya provide some pics as well…

    Are you asking about your Toshiba Equium A60?
    Take a look at the Satellite A60/A65 disassembly at Irisvista.com/tech/

  110. Skido says:

    Hi
    my gateway laptop powers on by itself as soon as i pluck in the ac adapter. can u tell me whats wrong with my laptop. thankx in advance

  111. Repair Man says:

    Skido,

    my gateway laptop powers on by itself as soon as i pluck in the ac adapter. can u tell me whats wrong with my laptop.

    I’ve seen a problem like that before and I think this is related to the motherboard malfunction. I don’t know exactly what is wrong and which component is causing this failure.

  112. Mj says:

    Hey, I have compaq R3000, it does not turn on at alll, it is not because of AC adapter, not for battery, not for AC jack,
    i have done some research and found it is caused by “internal DC to DC convertor” can you show what a dc- dc convertor chip looks like on a motherboard.
    Thanks a lot.
    please email me

  113. Repair Man says:

    Mj,

    i have done some research and found it is caused by “internal DC to DC convertor” can you show what a dc- dc convertor chip looks like on a motherboard.

    I don’t know that. I don’t fix motherboards on component level.

    Are you sure your problem is not related to a faulty RAM module?

  114. elmer says:

    laptop is completely dead. There are no LED light activity when you press on the power button and when I insert good 19v adapter the voltage is decrease to almost zero voltage,Can still fix this?

  115. Repair Man says:

    elmer,

    laptop is completely dead. There are no LED light activity when you press on the power button and when I insert good 19v adapter the voltage is decrease to almost zero voltage,Can still fix this?

    Have you tested the laptop with a few different AC adapter?
    If you did, probably it’s bad motherboard.

  116. bhagyanath says:

    i jus want to kno where is the ram slot in TOSHIBA SATELLITE A60..COZ i cant find the ram slot..is ther only one socket for the ram..i gave my laptop for repair and they said its motherboard is dead..so i wanted to take its RAM and put it into another laptop..so can ya help me find the RAM slot…

  117. George says:

    My laptop (Lenovo 3000 N100) starts normally, but after 1-3 minutes it turns off suddenly. However, sometimes (after 5-6 trying) it works I can use it without any problem.
    By the way, it works since 3 months with adapter only, I supposed the battery is wrong, but I think this is a motherboard problem. What is your opinion?

  118. Repair Man says:

    George.

    My laptop (Lenovo 3000 N100) starts normally, but after 1-3 minutes it turns off suddenly. However, sometimes (after 5-6 trying) it works I can use it without any problem.

    Could be bad memory module. Do you have two memory modules installed? Try removing them one by one and test the laptop with each module separately.

  119. Repair Man says:

    bhagynath,

    i jus want to kno where is the ram slot in TOSHIBA SATELLITE A60..COZ i cant find the ram slot..is ther only one socket for the ram..i gave my laptop for repair and they said its motherboard is dead..so i wanted to take its RAM and put it into another laptop..so can ya help me find the RAM slot…

    Toshiba Satellite A60 laptop has only one external memory slot. The main memory is integrated into the motherboard and cannot be removed.
    If you have nothing installed in the slot on the bottom, you will not be able to remove RAM.

  120. Steve says:

    Where can I find step by step manuals on how to disassemble all laptops so I can replace motherboards?

  121. Bhagyanath says:

    hai,,,im facing a big problem…my buffalo network adapter is not working..there is 2 PCMCIA slots in ma laptop..and wen i insert the adapter to the top slot ,laptop detects the network card but after installing the driver ,it says cannot start the device..and wen i insert it to the bottom slot..my xp gets stuck..my xp continues working if i remove the adapter from the slot..what should i do..im not able to use ma wireless these days…i am using IBM T21..

  122. Repair Man says:

    Bhagyanath,
    Not sure what’s going on but it’s possible you have some kind of compatibility issue between the PCMCIA card and your ThinkPad laptop.
    I know that ThinkPads might now work properly with some internal Wi-Fi cards because it has to be some kind of “IBM certified card” or something like that. Apparently, the same applies to some external PCMCIA cards.
    Can you find another PCMCIA Wi-Fi card for test?

  123. anjum says:

    repairman hello
    i have dead compal al51-15 pentiam m 1.4 ghz .motherboard required as per local repair shops. from where i can find motherboard for this laptop.

  124. Keeth says:

    Thanks Repair Man, for pointing me in the right direction (see 43). The problem description exactly fits mine! I’ll try it tonight.

    Cheers,
    Keeth

  125. Repair Man says:

    anjum,

    i have dead compal al51-15 pentiam m 1.4 ghz .motherboard required as per local repair shops. from where i can find motherboard for this laptop.

    I’m not familiar with compal laptops but here’s my guess.
    Look in the memory compartment, maybe you can find the motherboard part number in there. When you find the part number, google it. There is a chnce to find a replacement motherobard this way.

  126. stephh says:

    hi,i have an hp pavilion dv7 and it was working fine until one day it discharged completely.I left it discharged for about 3-4days.I then hooked up the AC adapter and the it appears as its charging the three lights are flashing.i left it charging all day then i pressed the power button and it seemed as if it was going to power on..the power and lights on keyboard turn on.the fan runs as well.only for about 5 seconds and then i hear a little beep and it turns off.and ive tried it couple of times it does the same thing

  127. Repair Man says:

    stephh,

    i have an hp pavilion dv7 and it was working fine until one day it discharged completely.I left it discharged for about 3-4days.I then hooked up the AC adapter and the it appears as its charging the three lights are flashing.

    Is it normal for all three lights to flash when the battery is charging?

    i left it charging all day then i pressed the power button and it seemed as if it was going to power on..the power and lights on keyboard turn on.the fan runs as well.only for about 5 seconds and then i hear a little beep and it turns off.

    I think you might have a dead AC adapter and it’s not charging the battery. You’ll have to test the laptop with another known good AC adapter.
    If you have the same problem with a new adapter, most likely it’s the motherboard failure.

    I would definably tested the laptop with a new adapter first.

  128. Veen says:

    am using a fujitsu l1010

    and now i have some things need help.

    i got a few shocks from my laptop touching the metal parts…

    and also, when am holding the laptop, and if someone rubs me or sumtin, theres a static. When someone rubs my ear, i can hear the buzzing sound

    please someone help me

    when i use a test pen to check on the metal parts, it lights up.
    but i aint sure, cauz the same test pen i checked with a homepc, theres no light.

    so is it because of current leakage?

  129. Repair Man says:

    Veen,

    am using a fujitsu l1010

    and now i have some things need help.

    i got a few shocks from my laptop touching the metal parts…

    and also, when am holding the laptop, and if someone rubs me or sumtin, theres a static. When someone rubs my ear, i can hear the buzzing sound

    Try calling Fujitsu and find out if it’s a known issue with your model. It’s possible there is a grounding issue in the laptop.
    Sorry, I cannot help remotely, it’s not a common problem.

  130. Veen says:

    Alright mate…thanks alot! i’ll check it out

  131. abhi says:

    Hi,
    I am using 2 years old Toshiba Equium A-100.

    It’s not powering up immediately after pressing power buttons.
    I have to leave it for few hours connected to power source before it boots up.Only Ac adapter led keeps glowing.

    Also it is not retaining system date and time.

    Any Clue on whats wrong with it?

    Thanks

  132. Repair Man says:

    abhi,

    I am using 2 years old Toshiba Equium A-100.

    It’s not powering up immediately after pressing power buttons.
    I have to leave it for few hours connected to power source before it boots up.Only Ac adapter led keeps glowing.

    It’s not a common failure and I cannot tell you what is causing the problem. It’s possible that one of the laptop components is failing preventing it from booting properly.
    Here’s what you can try. Try minimizing your system as much as you can and test it after each step.
    For example:
    1. Remove the battery and test with AC adapter.
    2. Remove DVD drive and test.
    3. Remove hard drive and test.
    4. Unplug the keyboard and test.
    etc…
    If the laptop stat properly after you remove something, most likely the last removed device is causing the problem.

    Try removing memory modules one by one. Test the laptop with only one memory module installed. It’s possible that one of the modules is bad.

    If you minimized your laptop as much as you could but it still having the same problem, most likely it’s related to the motherboard.

    Also it is not retaining system date and time.

    Make sure the main battery is installed. Plug in the laptop into AC and let it charge overnight. If the laptop still loosing date and time, it’s either bad CMOS battery or faulty motherboard.
    A CMOS battery usually last more than 2 years.

  133. Abdul Aziz Sanin Baba says:

    Hi stave, base on your request these are some suggestion.
    each laptop manufacturers used to provide system maintenance and services manual for there customers.
    I think you can try this and see like;
    -ping to http://www.hp.com
    -click on support and drivers download
    -Select start by detection
    -Type the laptop you are interesting to deassemble (eg.hp pavilion dv6000 cto notebook pc manuals) and click start
    -A list of different laptop displayed, select yours and your operating system.
    -On the listed question they asked select maintenance service manunals.
    -By then you will see your manual on your request……………………………………………bye.

  134. urmi says:

    hi repairman,

    i have a toshiba laptop 2405-S201, one fine morning, after having worked well till the night before, the cursor just would not move from the middle of the screen. i cant go the keyboard route as it seems that the key board is unresponsive. could you help me figure out what could possibly be wrong and how i could fix it? thanks.

  135. Repair Man says:

    urmi,

    i have a toshiba laptop 2405-S201, one fine morning, after having worked well till the night before, the cursor just would not move from the middle of the screen. i cant go the keyboard route as it seems that the key board is unresponsive.

    Can you use keyboard on the BIOS level? Turn on the laptop and try entering the BIOS setup menu. When Toshiba logo appears on the screen, press Esc key (or F1, or F2). Can you enter the menu? Does your keyboard work in there?

  136. ben says:

    hello i have asony vaio laptop that got a little water on it and it will not show any signs of life. it was brand new and working fine until then, is there any way i can fix this or test it? please help and thank you in advance. ben in alaska

  137. Repair Man says:

    ben,

    i have asony vaio laptop that got a little water on it and it will not show any signs of life. it was brand new and working fine until then, is there any way i can fix this or test it?

    If the laptop is completely dead after liquid spill, most likely you fried the motherboard. Sony motherboards are not cheap. :(

  138. MalaMalum says:

    Hi!

    A question, when I turn on the power to my Toshiba Satellite A105 the light comes on indicating power but there is no Toshiba boot up screen. The screen remains blank.

    The harddrive was removed and the same problem happened, the video output was tested but that was not the problem. Do you have any ideas?

    Thank you

  139. Repair Man says:

    MalaMalum,

    The video output was tested but that was not the problem.

    It’s not very clear. Are you getting any image on the external monitor or not? Can you use the laptop with video on the external monitor?

  140. Afolabi says:

    When a laptop happens that …….if you on it immediately it will off …….please what happened

  141. MalaMalum says:

    Thanks for the response. No, there was no image on the external monitor.

  142. Repair Man says:

    MalaMalum,

    Thanks for the response. No, there was no image on the external monitor.

    Most likely it’s either bad memory or motherboard failure.
    1. Try reseating memory modules.
    2. If you have two memory modules installed, remove them one by one. Test the laptop with each memory module separately.
    If one of the modules is bad, the laptop will start properly when this module is removed.
    3. If the laptop fails with known good memory, most likely this is the motherboard failure.

  143. Ron says:

    I have an inspirion 8600. Recently I have not been able to get on the internet via a LAN connection. I noticed that the yellow and orange LEDs are on at the connection port. A couple of times I have had to jiggle the cord to get it to make a good connection. I already tried the easier things, ie driver replacement, etc. but now it seems hard down. My guess is the connection is bad on the computer. How do I replace that connector (it is not in the manual) or do I need a new system board? Alternative should I take this as a opportunity to “upgrade”?

  144. Repair Man says:

    Ron,

    I have an inspirion 8600. Recently I have not been able to get on the internet via a LAN connection. I noticed that the yellow and orange LEDs are on at the connection port. A couple of times I have had to jiggle the cord to get it to make a good connection. I already tried the easier things, ie driver replacement, etc. but now it seems hard down. My guess is the connection is bad on the computer. How do I replace that connector (it is not in the manual) or do I need a new system board?

    Make sure it’s not the network cable failure. Test the laptop with another cable.
    Also, take a look inside the network port. It’s possible that one of the pins is bent/damaged. In some cases, if the pin is not damaged badly, you can straighten it with a very small screwdriver or needle.

    The network port is soldered directly to the motherboard, and if the network port failed, you’ll have to replace the motherboard. I think it’s possible to replace just the port, but I doubt that you can find this part sold separately.

    If the network port is bad, you have the following options:
    1. Replace the broken port.
    2. Replace the motherboard.
    3. Use a PCMCIA network card. You plug this card into the available PC slot on the laptop and get a network port instead. I think this will be the best way to go if you have a problem with the network port on the motherboard.

  145. Adharsh says:

    Can i add desktop’s graphic card to my laptop

  146. Repair Man says:

    Adharsh,

    Can i add desktop’s graphic card to my laptop

    You cannot. It’s not possible.

  147. Carter says:

    Hi, I have a Toshiba P205D S8804. I’m having major issues finding a supplier to purchase a new motherboard. Anyone know who I might be able to buy from. Been searching for several days and have had no luck what so ever. Thanks

  148. Repair Man says:

    Carter,

    I have a Toshiba P205D S8804. I’m having major issues finding a supplier to purchase a new motherboard.

    Find the motherboard part number and google it. In most Toshiba laptop the motherboard part number could be found on a sticker in the memory compartment.

    If you cannot find it, give me the laptop model number: PSPBLU-XXXXXX and I’ll find the motherboard part number for you. I assume you purchased this laptop in the United States.

  149. Chlens Dyson says:

    I have a dell latitude d820 it will load os successfully and after a while the video will be garbled. Once you shut it off, trying to start it there be two blinking lights and one solid and it will not boot again. What can be causing this problem?

  150. Repair Man says:

    Chelns Dyson,

    I have a dell latitude d820 it will load os successfully and after a while the video will be garbled. Once you shut it off, trying to start it there be two blinking lights and one solid and it will not boot again. What can be causing this problem?

    Most likely this is either memory or video card failure.
    Do you have two memory modules installed in the laptop? Try removing them one by one. It’s very unlikely that both modules failed at the same time. The laptop might work properly when you remove the faulty memory module.
    Also, try moving modules from one slot to another just to make sure it’s not a faulty memory slot on the motherboard.

    If playing with the memory modules doesn’t help and the laptop still had garbled video, most likely there is a problem with the video card.

  151. Ernest says:

    mother board can’t power LCD light

  152. Ernest says:

    Hp pavilion dv6000 schematic diagram

  153. Naveen says:

    Hi, I have a Dell Inspiron 1720. Yesterday while booting it up, the Dell Logo Screen was garbled and it wouldnt start. When I try to power it on again, the Caps lock LED just flashes for like 30 times and nothing happens.
    I tried reseating memory modules & also tested the laptop with each memory module separately but it wont start.
    When I try pressing the power button with ‘D’ key simultaneously, I see Colors changing on the screen. Do you think its the motherboard thats causing the issue? I also have a NVIDIA graphics card on my machine. Please advice and appreciate your time!

  154. Repair Man says:

    Naveen,

    I have a Dell Inspiron 1720. Yesterday while booting it up, the Dell Logo Screen was garbled and it wouldnt start. When I try to power it on again, the Caps lock LED just flashes for like 30 times and nothing happens.
    I tried reseating memory modules & also tested the laptop with each memory module separately but it wont start.

    It’s very unlikely that both memory modules failed at the same time, so I assume this problem is not memory related.
    The garbled screen sounds like a problem with the video card.

    Do you think its the motherboard thats causing the issue? I also have a NVIDIA graphics card on my machine.

    It’s hard to tell but I think this is related to the video card failure.
    Is it a discrete module? If yes, I would try replacing the video card.
    If the video card is integrated into the motherboard, you’ll have to replace the entire motherboard.

  155. lukas says:

    hello,
    I need a daughter boards for Medion MAM2100, MD96327, pwa bd 8807im – apparently model number of daughter bard…
    thank you

    regards

    lukasz

  156. greg says:

    Hi Repairman –

    I have a 2004 Dell b130 which has suddenly come up with a blank screen issue. The computer seems to be running normally otherwise.

    When I run it off the wall jack and power it on, I momentarily see the startup screen before everything blacks out. If I connect an external monitor, I can sometimes get the display to show there briefly (few seconds) before that goes out, too (by hitting fn/f8).

    If I close the screen then reopen quickly, I can once again see the display briefly. It appears that each time I do this, it is about to go into standby mode. I removed one RAM module which seemed to get me a little more screen time, but it is still not maintain the display.

    Any recommendations on what to try next? Thanks!

  157. Greg says:

    Update on the above – I’ve R&R’d another ram module and the display works on the second monitor, but still nothing consistent on the laptop lcd. Any thoughts?

  158. Repair Man says:

    lukas,

    I need a daughter boards for Medion MAM2100, MD96327, pwa bd 8807im – apparently model number of daughter bard…

    To be honest, I don’t know what the daughter board is.

  159. Repair Man says:

    greg,

    When I run it off the wall jack and power it on, I momentarily see the startup screen before everything blacks out. If I connect an external monitor, I can sometimes get the display to show there briefly (few seconds) before that goes out, too (by hitting fn/f8).

    If I close the screen then reopen quickly, I can once again see the display briefly. It appears that each time I do this, it is about to go into standby mode.

    This sounds like a problem with the inverter board or backlight lamp. Most likely the inverter failure.

    But I don’t understand what’s going on with video on the external monitor. Can you get video on the external monitor at all? Will it stay there?

  160. commaprs says:

    Hello,
    I’ve got a Packard Bell laptop EASYNOTE MX52-B-018 which doesn’t turn on, when i press the power button it lights up for a second and turns off again. I removed the cpu (Athlon X2 TK-55) pressed the power button and the laptop turned on but with no video.
    Is it possible the cpu has gone bad?
    Thanks

  161. Mohamad says:

    hello
    I have a laptop Toshiba satellite brand,it was working before in a good way , one day i turned it on, but nothing on the screen, i feel there is no boot, only power led is on, but no activity for the laptop.
    is there any keys for reset the bios or something can help me?
    Thanks for your help.
    Regards.

  162. Freddie Ruiz says:

    Hi repair man my dad’s laptop its a Acer Aspire 5315 and he was just using it one night turned it off and the next day the laptop was dead. It wont turn on any light or led and wont start any internal stuff like the fan. I started thinking that maybe it could be a BIOS problem but my dad didnt make any upgrade. Right now im out options could you give a any ideas.
    P.D. I did the fn+ESC+power button but no luck

  163. Repair Man says:

    Freddie Ruiz,

    Hi repair man my dad’s laptop its a Acer Aspire 5315 and he was just using it one night turned it off and the next day the laptop was dead. It wont turn on any light or led and wont start any internal stuff like the fan.

    First of all, test the power supply. It’s possible the AC adapter is dead. You can test the adapter with a multimeter. Can you read any voltage coming from the AC adapter?

    Also, you can try the old trick. Sometimes it helps. Unplug the power adapter, remove the battery. Press on the power button for a few seconds. Now plug the AC adapter and try to turn it on.

  164. jazzmine says:

    hi i have a acer aspire 5000 laptop and i cant get it to charge uselly i can get it to take a charge by unpluging the cord and repluging it back in i keep doing it until it starts charging i do not wiggle the cord around like some people do but thats starting not to work the cord does work cause i tested it on my moms laptop and it charges her fine i was on my laptop earlier the battery was fully charged but then it was about to shut down cause the battery got low there is a little juice in the laptop to turn it on for like 5 mintues but im wondring is it somthing wrong with the dc-jack the needle on the inside of the computer looks fine its not bent and i know its not the motherboard cause the computer comes on with no problem is there another reason why a laptop wont charge?

  165. Repair Man says:

    jazzmine,

    hi i have a acer aspire 5000 laptop and i cant get it to charge uselly i can get it to take a charge by unpluging the cord and repluging it back in i keep doing it until it starts charging i do not wiggle the cord around like some people do but thats starting not to work the cord does work cause i tested it on my moms laptop and it charges her fine

    Sounds like you have a problem with the power jack – socket where you plug the adapter. Most likely in your laptop the power jack (DC jack) is soldered to the motherboard. The laptop charges intermittently because the power jack is not making good contact with the motherboard.
    The power jack has to be resoldered (or replaced if it’s broken).

  166. TheBoyBest says:

    Hi there,

    I have an Acer Travelmate 5730 series laptop. Laptop will not POST unless I remove the CMOS battery and replace it. When I do this and plug in the AC adapter the the laptop powers up by itself.

    When I remove the CPU from the socket and connect the laptop it will power up for a couple of seconds (power light/charge light + the fanc spins).

    I removed and replaced RAM, HD, DVD-ROM, etc and it makes no difference. Only thing I haven’t been able to rest is the CPU. Does this sound like a CPU related fault?

    Regards

    TheBoyBest

  167. TheBoyBest says:

    Hi there, it was the CPU after all. Working like a charm now ;)

  168. Jrh says:

    i just want to ask u
    can i replace a RAM came from a laptop tp PC ??
    and also a wireless Lan ??

  169. jimmyduh says:

    mr repairman,
    I have an Arima M630-UC Laptop which a friend of mine bought somewhere in china for a very cheap price. The problem started when he download some virus and the laptop just went dead. At first when he gave me i was able to boot it using SLAX but now it wont even boot. LED light is on, the battery is out using AC adapter. I thought it was the CMOS battery (as some of my frind told me) dissamble it and change i with a new one, but still no luck. When I push the button the LED light is on and sound as if it want to boot but it is not. Oh by the way, I check the website it the laptop used a 60 watt AC adapter but i just bought a 40 watt adapter could this be the reason or the motherboard?
    sorry for my bad english. I really need help mr repairman

  170. Repair Man says:

    jimmyduh,

    I have an Arima M630-UC Laptop which a friend of mine bought somewhere in china for a very cheap price. The problem started when he download some virus and the laptop just went dead. At first when he gave me i was able to boot it using SLAX but now it wont even boot. LED light is on, the battery is out using AC adapter. I thought it was the CMOS battery (as some of my frind told me) dissamble it and change i with a new one, but still no luck. When I push the button the LED light is on and sound as if it want to boot but it is not.

    I’m not familiar with this laptop but most likely it has two memory modules installed. It’s possible that one of the modules went bad and because of that the laptop will not start. I think your problem is not related to the virus infection, it’s just a coincidence.
    Try removing memory modules one by one. Test the laptop with only one module installed. Try different slots.

    Oh by the way, I check the website it the laptop used a 60 watt AC adapter but i just bought a 40 watt adapter could this be the reason or the motherboard?

    If the laptop worked fine with a 40 watt adapter before the failure occurred, I don’t think it’s related to the problem.

  171. Repair Man says:

    Jrh,

    can i replace a RAM came from a laptop tp PC ??

    No, you cannot.

    and also a wireless Lan ??

    No, you cannot.

  172. Will says:

    I have a Dell Inspiron 1720 and today it suddenly went dead. Its not the battery nor the adapter. (I have 2 same laptops and interchanged them and it worked in the other computer.) The Power LED comes on and it doesnt flash – stays solid. The hard disk LED flashes for 2 seconds and disappears and i dont hear/see the fan working either. I tried to Fn+Power combo, the middle top 3 locked LED lights come on but again only for 2 seconds. I could be wrong but it seems when the computer tries to load to dvd player then it just dies. Any idea? Thanks.

  173. Repair Man says:

    Will,

    I have a Dell Inspiron 1720 and today it suddenly went dead. Its not the battery nor the adapter. (I have 2 same laptops and interchanged them and it worked in the other computer.) The Power LED comes on and it doesnt flash – stays solid. The hard disk LED flashes for 2 seconds and disappears and i dont hear/see the fan working either. I tried to Fn+Power combo, the middle top 3 locked LED lights come on but again only for 2 seconds. I could be wrong but it seems when the computer tries to load to dvd player then it just dies. Any idea?

    Maybe one of the memory modules went bad?
    If you have two modules installed, you can remove them one by one. Test the laptop with each module separately. It will start fine when the bad module is removed (if it’s faulty of course).

  174. David Gohr says:

    I have a Compaq Presario C504us that stopped working. It will not start with the power cord and the battery does not charge. I purchased a replacement power cord and still will not charge the battery or start the machine. I purchase a new battery and machine worked fine until the battery lost its charge. I checked for voltage after the jack inside the laptop and voltage is fine so it is not the jack. Is there a fuse or something on the motherboard that can be replaced. I am proficient with soldering.

  175. Michele says:

    I have a Compaq Presario F750us. About a year ago a child of mine got ice cream on the power button. It worked fine for the most part after I cleaned it up with a dry rag but the issue now is that the computer will not turn on. I went to a tech who told me that I more than likely blew the power chip that sits under the power button that you press. HP says that I am crazy and it has to be the motherboard. What I want to know is this, can it simply be that the power chip went out and needs to be replaced if that is the case how can I find the part number when the sticker came off with the ice cream? Also the ribbon that leads from the power chip under the keyboard is crimped pretty bad so I think that I would have to replace that too but I still can not find a site to tell me what the part numbers are for this situation. REMEMBER the computer worked perfectly until I shut it off to take it home and when I tried to reboot it it would not turn on. The motherboard has been checked so I know that it is fine is there a way that you can help me find the parts that I need to fix the laptop.

  176. leong says:

    Hi! Leong here, my aspire one when switch on when black. only the power light is on. When to acer service centre, say need to replace the whole motherboard. did not make the changes. Need your input what the real problem here.
    tks

  177. Repair Man says:

    leong,

    my aspire one when switch on when black. only the power light is on. When to acer service centre, say need to replace the whole motherboard. did not make the changes. Need your input what the real problem here.

    Did you test memory modules?
    In order to turn on a notebook, you need three main components: motherboard, CPU and memory.
    CPU doesn’t fail very often and you’ve replaced the motherboard. It’s likely that one of the memory modules is bad.

  178. Repair Man says:

    David Gohr,

    I have a Compaq Presario C504us that stopped working. It will not start with the power cord and the battery does not charge. I purchased a replacement power cord and still will not charge the battery or start the machine. I purchase a new battery and machine worked fine until the battery lost its charge. I checked for voltage after the jack inside the laptop and voltage is fine so it is not the jack. Is there a fuse or something on the motherboard that can be replaced. I am proficient with soldering.

    Maybe you have a blown power fuse. Usually you can find a fuse somewhere close to the power jack. Test it with a multimeter and if the fuse is open, replace it with a new one.

  179. Steve says:

    I have a Compal AL51 based system: it runs OK most of the time but the fan runs quite hard at times, and anything demanding just causes it to power off. Any ideas? I don’t see anything (quite) the same above

  180. Repair Man says:

    Steve,

    I have a Compal AL51 based system: it runs OK most of the time but the fan runs quite hard at times, and anything demanding just causes it to power off. Any ideas? I don’t see anything (quite) the same above

    Most likely this is heat related issue.
    Take a look inside the heat sink. If the heat sink is clogged with dust, clean it with compressed air. Try after that. Should work fine now.

  181. Tara says:

    My gateway p fx 6860 display reacted with odd pixels all over it then had dual images on it,one on top of the other, with a green/yellow tint. After doing all I could to rescue it I just bought a new Asus. I am curious thou is there anyway I can use this as a project and possibly rebuild it? Replace the system board and reuse the detachable parts to reconnect it?

  182. Repair Man says:

    Tara,

    My gateway p fx 6860 display reacted with odd pixels all over it then had dual images on it,one on top of the other, with a green/yellow tint.

    First of all, test your laptop with video output on the external monitor. Can you see same problem on the external video or it works properly?

    I am curious thou is there anyway I can use this as a project and possibly rebuild it? Replace the system board and reuse the detachable parts to reconnect it?

    You can, but first you have to find out if the problem is related to the video card failure or not. That’s why I’m asking you to test the laptop with external video.

    If you see the same problem on both screens, the laptop LCD and external monitor, this is the video card failure.
    If this problem appears only on the laptop screen but external video is fine, this could be the video cable or LCD screen failure.

  183. Ed says:

    Can you tell me how big the download is?

  184. Repair Man says:

    Ed,

    Can you tell me how big the download is?

    Not sure what you are asking about.

  185. Mike says:

    I have a 2 year old Dell Inspiron 1525. The machine worked fine yesterday but when i tried to turn it on today it has been unresponsive. I vaguely remember 1 of the 5 LED’s at the front of the machine being on for 5-10 seconds after i pressed the power button, though i could be wrong – following that there has been no response at all. No fan, no noise and no lights – no sign of activity at all. Tried a back up battery and adapter – still unresponsive. Any ideas?

  186. Repair Man says:

    Mike,

    I have a 2 year old Dell Inspiron 1525. The machine worked fine yesterday but when i tried to turn it on today it has been unresponsive. I vaguely remember 1 of the 5 LED’s at the front of the machine being on for 5-10 seconds after i pressed the power button, though i could be wrong – following that there has been no response at all. No fan, no noise and no lights – no sign of activity at all. Tried a back up battery and adapter – still unresponsive. Any ideas?

    No lights/noise/any sign of activity even after replacing the AC adapter? Sounds like a failed motherboard.

  187. ramesh says:

    i have dell 1014 vostro. i forget bios password. how reset bios password

  188. Kathleen says:

    I have a HP Pavillion dv6000. I push power and it flashes for a second then nothing. The power supply is fine, as is the battery. The place I bought it says I should just buy a new one for the price of repairs. How do I know if it’s Mother Board, or could bad memory cause this sympton?

  189. Repair Man says:

    Kathleen,

    I have a HP Pavillion dv6000. I push power and it flashes for a second then nothing. The power supply is fine, as is the battery. The place I bought it says I should just buy a new one for the price of repairs. How do I know if it’s Mother Board, or could bad memory cause this sympton?

    Most likely you have two memory modules installed in the laptop. Try removing memory modules one by one and test the laptop with each module separately. It’s very unlikely that both memory modules failed at the same time.
    If you still have a problem with only one memory module in place (either module), most likely this is the motherboard failure.
    I assume the AC adapter is working properly as you mentioned in your description.

  190. K says:

    “”””””””””””
    I have a HP Pavillion dv6000. I push power and it flashes for a second then nothing. The power supply is fine, as is the battery. The place I bought it says I should just buy a new one for the price of repairs. How do I know if it’s Mother Board, or could bad memory cause this sympton?
    “”””””””””””””””””

    memory? oh come on.
    its the motherboard sorry to break it to you, dv6000 has known issue with over heating and burn off the graphic card from the motherboard… it is repairable for some, but without proper professional chip reflow machine which cost like 5000$ you are out of luck. my advice to you is to sell it for parts, since even if you replace it with new motherboard cost like 170$ it will only be a mater of time before it dies again, because this is a bad dv6000 laptop design and the over heat problem will always be there. not worth repair, i can offer you 30$. ps: dont buy anymore HP.

  191. K says:

    **********I have a 2 year old Dell Inspiron
    1525. The machine worked fine yesterday but when i tried to turn it on today it has been unresponsive. I vaguely remember 1 of the 5 LED’s at the front of the machine being on for 5-10 seconds after i pressed the power button, though i could be wrong – following that there has been no response at all. No fan, no noise and no lights – no sign of activity at all. Tried a back up battery and adapter – still unresponsive. Any ideas?*************

    either your Dc board is fried or your motherboard is dead i can do the replacement for DC board 110$ (part cost 80$ on ebay dont know why so high…but i happen to have one) sounds very likely to be the DC board…to me 1525 dont really have too many motherboard issue unless you dropped it in water pool.

    and if its the motherboard i can repair it for 200$ (part cost at least 150$ on ebay)

  192. K says:

    **************************
    i have dell 1014 vostro. i forget bios password. how reset bios password***********************

    you can try to unplug the CMSO battery on your motherboard, however your laptop is relatively new and its a dell so…. you probabaly
    you cant, if you are the original owner call Dell they have a master password.

  193. EZEANYA FELIX says:

    Rain fell on my laptop (dell,inspiron 1501) through window.when i on the computer,it shows light and off since then.i dried it on the sun,yet nothing happens.this is 4months now.what should i do? And i dont have money for new one.

  194. Repair Man says:

    EZEANYA FELIX,

    Rain fell on my laptop (dell,inspiron 1501) through window.when i on the computer,it shows light and off since then.i dried it on the sun,yet nothing happens.this is 4months now.what should i do?

    I cannot tell what is wrong without looking at the laptop. It’s necessary to disassemble the laptop and take a look at the damaged. Probably the motherboard was damaged by the rain.

  195. Raidex says:

    To Kathleen who has failed HP dv6000
    That is repairable. If looked for PC repairers around your area, you should find somebody who can resolder chipset for 80-150$. Here in Ireland im doing it for €80. That cost fortune if you take to company but private people fixing it for the right price and very often do much better job than companies because they don’t need to deal with time pressure.

  196. Nicholas says:

    I have a toshiba satellite a305-s6872 and I bought a new battery and done a bios update but it won’t charge my new battery had a guy who has the same battery pack and charger try it in his and the battery started charging and my power adapter charged it to he said he thought it was the charging circuit how can I tell if its that or something else? Oh yea it works just fine plugged in.

  197. Nadine says:

    I have a DV2000 that wont turn on too save my life,the AC is good, and the battery is w.e but even if the battery sucked the computer is suppose to show that electricity is going threw, because the light on the side lights up, but there is no power. I opened it up and everything seemed to be okay, I really dont know what to do anymore.I was on my laptop and next thing I know it turns off and hasnt turned on in over a month.

  198. Repair Man says:

    Nadine,

    I have a DV2000 that wont turn on too save my life,the AC is good, and the battery is w.e but even if the battery sucked the computer is suppose to show that electricity is going threw, because the light on the side lights up, but there is no power. I opened it up and everything seemed to be okay, I really dont know what to do anymore.

    Most likely this is motherboard failure. This is a known issue with HP Pavilion dv2000/dv6000/dv9000 laptops.

  199. Repair Man says:

    Nicholas,

    I have a toshiba satellite a305-s6872 and I bought a new battery and done a bios update but it won’t charge my new battery had a guy who has the same battery pack and charger try it in his and the battery started charging and my power adapter charged it to he said he thought it was the charging circuit how can I tell if its that or something else?

    It’s not very clear. Did you test his battery pack and adapter with your laptop or you tested your new battery in his laptop?

  200. khalif says:

    i have a sony vaio pcg-7a2l. it will power on . the three lights that tell you that the numberlock and caps on light up and stay on.it never moves from this postion. neither logo or boot screen. the power led light is on , hard drive lights comes on and goes out. wifi light is on. nothing else happens.help

  201. russell says:

    i have an acer aspire. i try to open press the power button but only 5 to 6 seconds starting sound then it will shut down and will try to open again by itself then shut down again not even seeing opening on the monitor.

  202. Repair Man says:

    khalif,

    i have a sony vaio pcg-7a2l. it will power on . the three lights that tell you that the numberlock and caps on light up and stay on.it never moves from this postion. neither logo or boot screen. the power led light is on , hard drive lights comes on and goes out. wifi light is on. nothing else happens.

    First of all, I would check memory modules. Maybe one of the memory modules is bad and the laptop will not start because of that.
    Do you have two memory modules installed? Try removing them one by one. Test the laptop with each module separately. It’s unlikely that both modules are bad.
    If one of the modules is bad, the laptop should start properly with the second one installed.

  203. Repair Man says:

    russell,

    i have an acer aspire. i try to open press the power button but only 5 to 6 seconds starting sound then it will shut down and will try to open again by itself then shut down again not even seeing opening on the monitor.

    Could be memory failure. If you have two memory modules installed, try removing them one by one. Test your laptop with each module separately.
    If you have exactly same problem with a known good memory modules and the laptop keep restarting on its own, probably this is motherboard failure.

  204. Harbeer says:

    Hi,
    I had unique problem, my hp compaq pesario v 3000 mother board crashed two times. This time when i replaced it my tecnichian told me that the connector connecting the hard drive to the motherboard is missing. Can i find it in the stores? what does it look like because i can;t see it on any of your photos.

  205. Repair Man says:

    Harbeer,

    I had unique problem, my hp compaq pesario v 3000 mother board crashed two times. This time when i replaced it my tecnichian told me that the connector connecting the hard drive to the motherboard is missing. Can i find it in the stores? what does it look like because i can;t see it on any of your photos.

    This connector is available on eBay for about $7.

  206. Kelvin says:

    i hve a Toshiba satellite any i put on the machine it goes off when it been on for awhile want to the problem.

  207. Repair Man says:

    Kelvin,

    i hve a Toshiba satellite any i put on the machine it goes off when it been on for awhile want to the

    The laptop shuts down on its own? Could be overheating.
    Try cleaning the cooling fan and heat sink. Probably they are clogged with dust.

  208. Repair Man says:

    Kelvin,

    i hve a Toshiba satellite any i put on the machine it goes off when it been on for awhile want to the problem.

    Shuts off by itself without any warning? Probably overheating.
    Try cleaning the heat sink and cooling fan with compressed air. After all dust removed try again.

  209. Talei says:

    Hello. I have Compal FL90 that died on me suddenly. I went for the coffee to the kitchen (laptop was turn on, simply WEB page no CPU/GPU intense load) and when I came back it was turn OFF. When I press power button nothing happens! Fan don’t work, LED don’t light Up.
    I was running Kubuntu at that time, with default drivers (not the nvidia one) and I notice intense Fan work (in this model fan is laud so I can hear it easy). Fan goes to the full speed on simply WEB browsing, so I assume that either CPU or GPU could fried.
    Currently I disassembly laptop to basics elements and It seams that AC works fine, RTC works fine, some random resistors on the mobo have voltage (like 17V).
    My question is where do I start pinpointing failure. Is there easy way to check if CPU or GPU is working or not?
    Thanks for the reply
    Regards.

  210. Repair Man says:

    Talei,

    Currently I disassembly laptop to basics elements and It seams that AC works fine, RTC works fine, some random resistors on the mobo have voltage (like 17V).
    My question is where do I start pinpointing failure. Is there easy way to check if CPU or GPU is working or not?

    Did you try replacing memory?
    If you have two memory modules try removing them one by one. One of the modules could be bad.

  211. Talei says:

    Yes. I have 2 modules, 1GB each, Kingston. After swapping modules still nothing, and probability of two module malfunction is probably low.
    Unfortunately I don’t have spare parts to pinpoint faulty component.
    Anyway Thank You for reply, and If You have any other ideas I’m all ears.
    Regards

  212. Repair Man says:

    Talei,
    If the motherboard gets power from AC adapter but the laptop appears to be dead (and it’s not faulty memory), most likely this is motherboard failure.
    CPU failures are not common.

  213. Talei says:

    Thanks for potential cause.
    I have also question, because I read that In my model, Compal, biggest problem is heat and graphics card (GF 8600 M). So assuming graphic card fried could that cause mobo to not start up? Or even if graphics card is fried led light fireup or fan starts?

  214. Repair Man says:

    Talei,

    I read that In my model, Compal, biggest problem is heat and graphics card (GF 8600 M). So assuming graphic card fried could that cause mobo to not start up?

    Definitely yes.

  215. dileep yadav says:

    I have a HCL laptop over problem is battery not works

  216. Christian James says:

    i have a toshiba laptop, that i took 2 out and there was heavy sun and the sun heat the laptop and ever since then it has been making a noise whenever i on it as if the memory is no good and i change the memory and it continues. i even fiks another hard disc yet thesame thing. what do u think the problem is? or what will i do in order to solve the problem?

  217. Repair Man says:

    dileep yadav,

    I have a HCL laptop over problem is battery not works

    Than replace the battery…

  218. praveen says:

    I have a toshiba satellite a305-s6872 and I bought a new battery and done a bios update but it won’t charge my new battery had a guy who has the same battery pack and charger try it in his and the battery started charging and my power adapter charged it to he said he thought it was the charging circuit how can I tell if its that or something else?

  219. HUMBERTO says:

    Hi,
    I have a Toshiba satellite M105-S3041, when I turn on there are
    LED light activity normally, but the screen stays gray all the
    time.
    I would like to know what the problem is

  220. Jin says:

    I have really big problem at my Laptop, because when i start my laptop the power is on but the LED of display and the LED of HD does not on( or no light at all LCD) even the fan start but after 10 seconds it turns off! What should i do please help me!

    my laptop is toshiba Satellite A110-195

    and can i have a favor too ahm…. do you have a manual to a motherboard that shows all the circuit….ahm it is WHAT is the name,HOW it functions and WHERE it is located in the motherboard any kind of board. please help me………. i can’t afford to but a new one so please help….. thanks a lot

  221. Repair Man says:

    HUMBERTO,

    I have a Toshiba satellite M105-S3041, when I turn on there are
    LED light activity normally, but the screen stays gray all the
    time.
    I would like to know what the problem is

    First of all, test your laptop with an external monitor. If external video works fine, this could be video cable or LCD screen related problem.
    Try reconnecting the video cable on the motherboard and test laptop video after that.

  222. Repair Man says:

    Jin,

    I have really big problem at my Laptop, because when i start my laptop the power is on but the LED of display and the LED of HD does not on( or no light at all LCD) even the fan start but after 10 seconds it turns off! What should i do please help me!

    my laptop is toshiba Satellite A110-195

    Could be memory failure. Try removing memory modules one by one and test the laptop with each memory module separately. Make sure install the in different slots.

  223. Jin says:

    Yup i have tried that Mr. Repair man! but still doesn’t work!
    and also i have tried removing HD too and the battery still the same thing happen nothing happen!Please help

  224. Paul says:

    Hi,
    After plugging in a wet power adapter (I know: stupid), the power light indicates that it works but the screen stays black and no fan starts. The adapter still works fine on other similar computers. The power light comes on also when the battery is in the laptop. Any idea if a short circuit or whatever could have fried the mainboard? Its a Toshiba Tecra M2.

  225. saqib says:

    HI everyone

    i have an HP Compaq Presario CQ60-111EM. Bought it from Ebay it worked fine few day before it stopped working . I search for a while and i found this awesome forum to with very good and reliable tips for laptop repairs. So lets discuss about my problem.
    when i plug the charger in to laptop, power light and wirless button light turn on itself without pressing the power button and fans keep spinning until i plug the charger out, when i try same thing second time only power light comes on and fan does not spin at all, same thing happens again and again randomly, display does not come at all only black screen. charging light also comes on and dvd drive also work i guess becoze it comes out when i press the eject button, i can hear somthing spinning i think it is either hard drive or dvd drive. i took it apart , tried all basics things like reseat ram even tried different ram, tried different processor etc but nothing worked. i got nothing to test but going to buy multimeter to test it, but dont know what shud i test as i am not good to repair the motherboard but willing to learn infact keen to learn.

    Does anyone know what cud be wrong with it, plz help me in this regard.

    does anyone know anytype of source of learning motherboard repairs like weblink or books etc or anone briefly describle abt it.

    thanks

  226. borbs says:

    Hi, I had a problem with my laptop. One day, when I turned it on, a few minutes later, it restarted by itself. So, I did some tests, I used it using a power adapter with no battery, and it restarted. I used it with battery and power adapater, still it restarts but when I used it with battery only, then I continued using it until the last drop of my battery. So, anyone can attest to me, if whats going on with my laptop? My laptop is Toshiba Satellite A300. Does anyone has the same problem with me and what did you do to resolve such problem?

  227. Loke says:

    Hi, I got a 3 years old Toshiba Laptop A200 and when i start my laptop the power is on but the LED of display and the LED of HD does not on( or no light at all LCD) even the fan start but after 10 seconds it turns off! I have to start several times to get it on. Then If i manage to go into window, The LCD screen will automatic off and won’t turn on after few times of screen saver or the function of automatic turn off LCD screen in window. It may happen once after few hours of usage. The CPU fan will turn on and off during the window operation. May i ask which parts need to be replace? Is it over heat or motherboard or vga failure Thanks.

  228. need help says:

    hii i have acer extensa 5630 with a problem power button
    i plug ac adapter lid light on but wen press the button noting haven
    are there any solution

  229. Repair Man says:

    i have acer extensa 5630 with a problem power button
    i plug ac adapter lid light on but wen press the button noting haven
    are there any solution

    Could be memory failure. If you have two memory modules installed, try removing them one by one. Test the laptop with only one module installed. Try either memory module in either slot.

  230. Jayesh says:

    Hi, I had a problem with my laptop. One day, when I turned it on, a few minutes later, it restarted by itself. So, I did some tests, I used it using a power adapter with no battery, and it restarted. I used it with battery and power adapater, still it restarts but when I used it with battery only, then I continued using it until the last drop of my battery. So, anyone can attest to me, if whats going on with my laptop? My laptop is Toshiba Satellite A300. Does anyone has the same problem with me and what did you do to resolve such problem?

    Plz Reply

  231. Vincent says:

    Hi, I accidentally poured a drink into my laptop coursing it to go off. Now it will not start or even acknowledge the ac power adopter. In short it’s dead, what do I do please?

  232. Repair Man says:

    Vincent,

    I accidentally poured a drink into my laptop coursing it to go off. Now it will not start or even acknowledge the ac power adopter. In short it’s dead, what do I do please?

    Most likely the motherboard damaged.
    It’s necessary to disassemble the laptop completely and take a closer look inside.
    Turn it off and remove the battery. Do not use the laptop until diagnostics done.

  233. jared says:

    Hi! i noticed the laptop and motherboard your using for your example is a Toshiba a305 model… the same model im having problem’s with. When i press Power button, LED’s light up, fan kicks on, tries to access the cd rom, but turns off after about 3 seconds. The screen never turns on. it continues to turn itself on and off repeatedly unless unplugged. Ive tried new memory, tested hard drive, reapplied new thermal grease to all heatsinks, checked all cables were connected, etc. I shorted the CMOS battery on purpous to reset bios. I have a processor on the way that i purchased on ebay. Think i waisted my money? are these laptop’s known for bad motherboards? i couldnt find much info on the internet. Ive left everything unplugged except the power, and processor and fan and so ive narrowed it to motherboard or processor. Any ideas?

  234. Repair Man says:

    jared,

    When i press Power button, LED’s light up, fan kicks on, tries to access the cd rom, but turns off after about 3 seconds. The screen never turns on. it continues to turn itself on and off repeatedly unless unplugged. Ive tried new memory, tested hard drive, reapplied new thermal grease to all heatsinks, checked all cables were connected, etc. I shorted the CMOS battery on purpous to reset bios. I have a processor on the way that i purchased on ebay. Think i waisted my money? are these laptop’s known for bad motherboards? i couldnt find much info on the internet. Ive left everything unplugged except the power, and processor and fan and so ive narrowed it to motherboard or processor. Any ideas?

    Most likely this is motherboard related problem. CPU failures are not very common.
    I believe the laptop would stay on all the time even with failed CPU.

  235. Repair Man says:

    Vincent,

    I accidentally poured a drink into my laptop coursing it to go off. Now it will not start or even acknowledge the ac power adopter. In short it’s dead, what do I do please?

    Most likely you damaged the motherboard.
    It’s necessary to disassemble the laptop and take closer look at the damage.
    In most cases liquid spills not worth repair.

  236. Repair Man says:

    Jayesh,

    I had a problem with my laptop. One day, when I turned it on, a few minutes later, it restarted by itself. So, I did some tests, I used it using a power adapter with no battery, and it restarted. I used it with battery and power adapater, still it restarts but when I used it with battery only, then I continued using it until the last drop of my battery.

    Test the AC adapter, maybe it’s not working properly. I would definitely test laptop with another known good adapter.
    If the laptop still restarts with a new adapter, it must be some kind of motherboard failure.

  237. brian says:

    Hi…..I have a problem with a Medion MD 96500 (MIM 2040)…when you switch on the screen lights up for a second and then goes dark…..there are images on the screen but not bright…..classic
    inverter fault I thought….but I have changed the inverter 3 times with no effect…..I have checked that it is not the screen because I tried a back light from a broken screen and this does the same thing….Flashes once and off….so it looks like a power fault feeding the inverter…..but without a circuit diagram I am stumped………any ideas please

    Regards Brian

  238. john says:

    hi I have a problem with my cpu,,i mean my system board,,when i plug in the cord or switch on the avr its autmatically will on without switching on the power on in my computer,,,am mr. repairman,,what could be the possible problem with my s.u???…i check it all,,,i remove all parts like memory,videocard,the switch of the system..all parts i remove it instead the power supply…i chage allready jumper..the power supply is good

  239. soe gyi says:

    buy another laptop

  240. Kola says:

    My DV-2000 Hp laptop screen flickers. When I hold or tilt it, it shows but as soon as I leave it, it freezes. It keeps getting worse.
    Later, the speakers also stopped working, except when I use an external speaker.
    I desire to fix it myself but don’t know how to start. Can anyone help?

  241. hendra says:

    did you know about Acer Aspire 4520 Touchpad Cable, mine is broken

  242. Jad says:

    Hi, I really need some help. I want to whats wrong before taking my hp pavllion dv600 to service centre. Problem is that the charger doesn’t charge the battery at all. Charger is fine with other laptops. I also charged battery through some other laptop and after that it works fine when plugged into my laptop until it finally dies. Laptop works absolutely fine till the battery has the juice. All the leds glow on pressing the power button. Even the around the charging port. So what could be wrong? Please reply

  243. Repair Man says:

    Jad,

    Problem is that the charger doesn’t charge the battery at all. Charger is fine with other laptops. I also charged battery through some other laptop and after that it works fine when plugged into my laptop until it finally dies. Laptop works absolutely fine till the battery has the juice.

    Sounds like motherboard failure to me. Apparently the battery charging circuit failed.
    If you take it to a repair center, most likely they will quote the motherboard replacement.

  244. Donald says:

    Hi,

    I have a compaq presario cq60. The power light comes on, the fan turn on and I am able to access the cd tray but nothing else seems to work. I have switched it on using battery power, ac power and in all cases it just turns on but no light no sound just the fan light.

    What could be the problem?

  245. Repair Man says:

    Donald,

    I have a compaq presario cq60. The power light comes on, the fan turn on and I am able to access the cd tray but nothing else seems to work. I have switched it on using battery power, ac power and in all cases it just turns on but no light no sound just the fan light.

    What could be the problem?

    Could be memory failure.
    1. Try reseating both modules. Maybe one of them not making good connection with the motherboard.
    2. Try removing memory modules one by one. Test laptop with each module separately. One of the modules could be bad.

  246. nisa says:

    i have the same problem, my laptop is also a thoshiba a300, it is a problem with the motherboard power unit.

  247. Jerry says:

    I have a Toshiba A75 and the battery charges when the laptop is off but when I turn it on and plug in a AC adapter it does not charge the battery.. Does that have to do anything with the motherboard.. someone told me that it did and to replace the battery and mainboard? is that right..

  248. David says:

    Please i need your help. I want to format my laptop and load a new operating system on it but it could not do, first of all i set the first booting device on CD ROM and second booting device on flopping derive, i put on the ( XP Service pack2 CD on the drive it refuse picking up, it only blank Screen will be display on the Laptop screen. please what will likely be the problem please help. Thanks.

  249. Repair Man says:

    nisa,

    i have the same problem, my laptop is also a thoshiba a300, it is a problem with the motherboard power unit.

    The same problem as who?

  250. Repair Man says:

    Jerry,

    I have a Toshiba A75 and the battery charges when the laptop is off but when I turn it on and plug in a AC adapter it does not charge the battery.. Does that have to do anything with the motherboard.. someone told me that it did and to replace the battery and mainboard? is that right..

    Most likely your problem is related to the DC power jack. I’ve seen hundreds Satellite A75 laptops like that.
    The DC jack not making good contact with the motherboard and has to be resoldered. Probably it’s bad connection between the “+” leg of the jack and motherboard.

  251. Repair Man says:

    David,

    I want to format my laptop and load a new operating system on it but it could not do, first of all i set the first booting device on CD ROM and second booting device on flopping derive, i put on the ( XP Service pack2 CD on the drive it refuse picking up, it only blank Screen will be display on the Laptop screen. please what will likely be the problem please help

    Make sure the CD is clean.
    Also, try cleaning the optical lens inside the DVD drive. Open up the drive and clean the lens using cotton swab and 99% alcohol.
    If it doesn’t help, it’s possible the DVD drive is bad. Test your drive with another bootable CD or DVD. Will it boot from another disc?

  252. David says:

    I have a Sony VIAO and the screen does not show anything. It appears that the laptop is working as you can barely see the screen with a flashlight. I thought it would be a module or CFFL bulb. I took it to a repair shop and the technician said he had to replace or fix the Motherboard and replace the bulb. He is charging me $160.00. Does this sound like a correct “fix”. The problem is, he fixed this laptop without my consent. I told him to let me know what the problem was and how much it would cost to fix this older laptop. It was manufactured in 2003 or 2005. ALso, I am not sure this laptop has an operating system.

  253. olushola says:

    THIS SITE IS GREAT
    My presario CQ61 hang when it boot to destop environment. the system com with windows 7. the problem started immidiately after reformating it. pls help me with the solution. God bless

  254. Repair Man says:

    olushola,

    My presario CQ61 hang when it boot to destop environment. the system com with windows 7. the problem started immidiately after reformating it. pls help me with the solution.

    Could be driver related issue. Is your laptop designed to support Windows 7?

  255. Zara says:

    I have a Toshiba A60 keyboard problem. Approx 10 keys do not work so we replaced with a new keyboard and the exact same keys do not work. Is this a motherboard problem?
    Thanks

  256. Repair Man says:

    Zara,

    I have a Toshiba A60 keyboard problem. Approx 10 keys do not work so we replaced with a new keyboard and the exact same keys do not work. Is this a motherboard problem?

    Keys do not work at all? Yes, most likely this is motherboard related problem.
    Just in case, disconnect the keyboard cable from the motherboard and look inside the connector. Make sure the connector is clean and there is nothing stuck inside.

  257. olusegun says:

    hi i have problem with my laptop hp pallion zv5000, whenever i try to connect the RG45 connector to browse it always restarted,why pls send your solution.
    thanks,segun

  258. Repair Man says:

    olusegun,

    i have problem with my laptop hp pallion zv5000, whenever i try to connect the RG45 connector to browse it always restarted,why pls send your solution.

    Take a look inside the RJ45 jack. Maybe you have bent pins inside the jack and when you plug the cable, you short them.
    If the RJ45 jack is damaged, you can use an external PCMCIA LAN card. Just plug it into the PC slot and you have another RJ45 jack available.

  259. Samida says:

    i have Compaq 420 notebook & its dvd writer is not working,when i removed DVD writer i saw there is no connection between DVD & Motherboard.there is a gap between connector of motherboard & DVD writer means DVD writer properly not connector to Motherboard ,What should i do????

  260. Joyce says:

    My daughter spilled 20 oz. of water on her dv2000 HP laptop. We dried it out. So far it works with external usb attached keyboard. Will be replacing the keyboard soon – Monday. Should we leave it on and not shutdown. The adapter seems to work and we haven’t tried it with the battery in it. But the battery wasn’t in it when the water was spilled on it. Took out hd, dvd, memory, then finally the keyboard and underneath was some drops of water which was quickly cleaned out. Haven’t looked at the moboard. Should we also try to use battery?

  261. Repair Man says:

    Joyce,

    My daughter spilled 20 oz. of water on her dv2000 HP laptop. We dried it out. So far it works with external usb attached keyboard. Will be replacing the keyboard soon – Monday. Should we leave it on and not shutdown. The adapter seems to work and we haven’t tried it with the battery in it. But the battery wasn’t in it when the water was spilled on it. Took out hd, dvd, memory, then finally the keyboard and underneath was some drops of water which was quickly cleaned out. Haven’t looked at the moboard. Should we also try to use battery?

    It’s hard to tell how bad the spill is.
    If the laptop still works, you are lucky.
    I would turn it off, remove the battery and let it dry for a few days. Just to make sure all water is gone or dry.

  262. cin takvimi says:

    I got what you intend, thankyou for putting up.Woh I am lucky to find this website through google.

  263. Dave says:

    I have replaced a cmos battery in a Compaq Evo N400c. The bios clock still reverts to year 2001. Is this a battery problem or setting?
    Thanks

  264. Repair Man says:

    Dave,

    I have replaced a cmos battery in a Compaq Evo N400c. The bios clock still reverts to year 2001. Is this a battery problem or setting?

    Is your new CMOS battery good? If the battery is good, the laptop should be able to keep time properly unless there is a problem with the CMOS chip.
    When you enter the BIOS setup menu and change time, is there any button to save settings? Maybe you forget to save changes?

  265. abhi says:

    hi,

    my old dell xps m1330 had this problem every time i plug in the adapter the there is some tripping sound and adapter light goes off..
    i think it gets shortckted so m not sure if the problem is with the motherboard or somthing else shown it to few technicians I was told the laptop was useless and should get a new 1 so i got a new one
    any help????

    thanks in advance.

  266. Mohamed says:

    Is it possiblem to build a laptop from scratch like a PC? Can you pruchase all the individual components and produce your own unique laptop?

  267. Repair Man says:

    Mohamed,

    Is it possiblem to build a laptop from scratch like a PC? Can you pruchase all the individual components and produce your own unique laptop?

    No you cannot do that but there are companies where you can order a custom built laptop.

  268. Repair Man says:

    abhi,

    my old dell xps m1330 had this problem every time i plug in the adapter the there is some tripping sound and adapter light goes off..
    i think it gets shortckted so m not sure if the problem is with the motherboard or somthing else shown it to few technicians I was told the laptop was useless and should get a new 1 so i got a new one
    any help????

    It’s hard to tell what’s going.
    First I would test the laptop with another working AC adapter, just to make sure it’s not the adapter problem.
    If the problem still there, I would take a closer look at the laptop power connector. It’s possible the the power connector (DC jack) is broken and has to be replaced.

  269. Pau23 says:

    Hello Good eve, just want to ask if i could customize my old laptop, like i want to replace the whole board and start over. is that possible?

  270. GAZ says:

    Does anybody know the kind of motherboard an Acer Aspire 5720 (17″) has?
    I need to buy one but i don t know how to find the specific one

    gracias

  271. Jose says:

    Hi I have a HP pavilion dv 6000 with a failed battery or battery charging circuit as it powers off completely if it’s not plugged into the wall, however when it’s plugged back in it starts over and runs fine. Today it happened that it got unplugged and powered off, but when plugged back in none of the LEDs turned on – except for the power jack one and the laptop is dead. Usually the power LED at the front turns on too, but this time it did not happen. Does that mean my motherboard is fried? Or should I try changing the primary battery and it could work? Are there other options not mentioned here which I could try?
    Thanks

  272. bryce says:

    hello, i have a toshiba satellite 300d-01q. I plug my laptop in to the power supply, it doesnt charge the battery but thats not really my biggest problem. The low battery light pops on as usual along with the connected to the power supply light. I push the on button, it comes to the regular start upp screen with F2 and F12 options if needed. Then it flips screens and at the top left of the screen
    – < pops up, blinks a couple times then the screen is black. After about a minute of 2 of black nothing. it flips to a "windows is loading files…" with a bottom loading bar. after about 5 minutes it loads and starts again. can you help me specify what exactly the problem is?

  273. demetrio says:

    How to clear the password of my del computer with out buying the soft were and with out opening my computer?
    can you help please?

  274. Joan says:

    I need you help, I have Neo GL31, for the past few months, it heats up and automatically turned off. A month ago, its wont open when I press the on button, but then 2 days after I tried opening it, it worked again. But then just the other day it did not open anymore. I tried using just the battery, it wont open, I tried direct plugging without battery, no power at all and wont open, I tried using diffent charger, nothing happened. What could probably happened and what do you think is the problem? Thanks, please reply, via email if possible. All my files are there and I am so worried.

  275. Kamil says:

    am happy to friend with this page,
    i wanna No, if an power ic is the problem of this system,
    there is dell d600 motherboard with me, my customer ask for help out to repair the system him.
    This major board, it receiving in current but it not powering, i had change the power ic, it doing the same, i don’t what to do nest Again,
    i need help out, to solve this system proble.
    Thanks, i wish to head you soon as Possible, god bless

  276. Robin Baker says:

    First off, I want to thank you for creating such a fantastic and informative site!!! I can’t get enough!
    Now, my trouble: I have an HP Pavilion ze4949 that I got 2ndhand, and the LED that indicates a charging battery has never worked, nor has the battery charged, and I’ve bought 3 seperate and different batteries to test it. I’ve also replaced the AC adapter (with the manufacturer’s recommended part), with no change in status. When I ran the diagnostic software, I got a battery detected but not charging, complete with the red line and the message telling me to consider buying another battery (even while the battery being tested was less than a day old AND ran fine in a friend’s similar machine!). My question is, how do I go about determining where the problem is on the board, and where can I find information on how to repair it when I locate it? I’m not a wimp, and have been ‘playing’ with desktops for over 15 years,(and all sorts of other electronics for even longer!) but laptops kind of have me intimidated, and I’d prefer to have some working knowledge prior to attacking this. Any help would be appreciated, even if it’s just some URLs leading to the information I need to get comfortable with performing ‘major surgery’ on my laptop!
    Thanks again for posting so much wonderful and enlightening information, and assisting those of us who haven’t the opportunities for formal learning to continue to expand our tech horizons!

  277. chester says:

    when I turn on my laptop the lights on the keyboard light up. The HD is not spinning, in fact I could smell a faint burning smell. The fan does not spin as well. I tried re seating the ram and still nothing. I tried turning it on w/o the ram installed only difference is now it didn’t stay on and it completely shut off. I then removed the HD and tried it and it still shut off. You think maybe motherboard?

  278. revan kumar says:

    Dell Inspiron 6400/E1505 laptop dead won’t start, with or without battery, I tried power supply from another dell, no help. when I press on button, the left light? lights up for 3 seconds, then shuts off no sounds of any kind, nothing on the screen. about 3 months out of warrenty. this happened all of a sudden with no symptoms beforehand

  279. TP Verma says:

    Sir,
    I am having dell studio 1450 laptop. The battery is now no more charging from charger. When I plug charger and press power button there are 4 amber light following 1 white light light flashing but laptop not powering on. May be due to dead charge in battery. But when I removed battery and plug charger it working fine, but there is no any light flash(status indicator). I shown my laptop to 2-3 local laptop repair technicians. They all have different views, one said this is failure of motherboard need to replace motherboard, another said that battery charging circuit failure. And one another said that battery needs to be replaced no problem in motherboard. I am not having any spare battery to check. May be I have to purchase new one and check is this battery problem or motherboard. Could you help me in this problem.
    Thanks.

  280. Repair Man says:

    @ TP Verma,

    I am having dell studio 1450 laptop. The battery is now no more charging from charger. When I plug charger and press power button there are 4 amber light following 1 white light light flashing but laptop not powering on. May be due to dead charge in battery.

    There is no way I can tell what is causing the problem without testing your laptop with a known good battery.
    It’s either bad battery or motherboard failure but you need another battery to find out.

  281. Repair Man says:

    @ revan kumar,

    Dell Inspiron 6400/E1505 laptop dead won’t start, with or without battery, I tried power supply from another dell, no help. when I press on button, the left light? lights up for 3 seconds, then shuts off no sounds of any kind, nothing on the screen.

    I assume that another AC adapter is compatible with your laptop so it’s not the adapter problem.
    First of all, I would try removing memory modules one by one and test the laptop with each module separately. Sometimes a failed memory module can cause that.
    If the laptop doesn’t work with either module installed, probably this is motherboard failure.
    Also, could be failed DC jack. Can you start the laptop if you find the right position for the adapter plug inside the jack? Wiggle the plug and try turning on the laptop at the same time.

  282. sotiris says:

    I have a toshiba satellite a300 my previous moterboard died.. i ordered a new one but when i plugged it without a battery the fun turn in full speed whithout having pressed the power button. When i press the power button it completely shut down. When i used only the battery it does the same at hthe beggining and when i press the power button it loads normally but does not charge. I find out that when i use the sd slot it charges provided that the sd ligth is on… Any ideas?

  283. Repair Man says:

    @ sotiris,

    I have a toshiba satellite a300 my previous moterboard died.. i ordered a new one but when i plugged it without a battery the fun turn in full speed whithout having pressed the power button. When i press the power button it completely shut down. When i used only the battery it does the same at hthe beggining and when i press the power button it loads normally but does not charge. I find out that when i use the sd slot it charges provided that the sd ligth is on… Any ideas?

    It’s possible the new motherboard is defective.
    It should not start by itself when you plug in the AC adapter.

  284. kmohan90 says:

    Laptop:- Hp Pavilion dv6913tx
    problem:- When i start the laptop,BIOS screen is visible,then a blinking cursor appears. sometimes after the appearance of cursor it restarts.somtime without presence of any cursor the screen is blank.
    when Started:-After using laptop continuosly for several hours,it hanged.i shut it forcably using power button.
    earlier also this problem occured,but it started after few days.
    I checked HD,memory (even tried flipping),battery,fan.these are working fine.

  285. thena says:

    hello … my compaq presario cq40’s motherboard died already…but still not fixed yet….and if fixed it will the files and all the memory still will be inside the laptop ??

  286. Repair Man says:

    @ thena,

    my compaq presario cq40′s motherboard died already…but still not fixed yet….and if fixed it will the files and all the memory still will be inside the laptop ?

    All files are saved on the hard drive.
    If your motherboard failed, it shouldn’t affect files.
    You can recover files using an external USB enclosure.
    By the way, probably it’s not worth replacing the motherboard. Just buy a new laptop.

  287. Repair Man says:

    @ kmohan90,

    When i start the laptop,BIOS screen is visible,then a blinking cursor appears. sometimes after the appearance of cursor it restarts.somtime without presence of any cursor the screen is blank. I checked HD,memory (even tried flipping),battery,fan.these are working fine.

    Try reseating the hard drive. Maybe it’s not making good connection with the motherboard. If reseating the hard drive doesn’t help, this could be motherboard failure.

  288. Samuel says:

    HEllo I need help Please

    I have a Toshiba M105-s3041 laptop… My computer turn on and then off. I want to try to remove the CMOS Batt But Its sold to the motherboard. How can i reset the bios, so i cant be clearly that is something else???

  289. Repair Man says:

    @ Samuel,

    I have a Toshiba M105-s3041 laptop… My computer turn on and then off. I want to try to remove the CMOS Batt But Its sold to the motherboard. How can i reset the bios, so i cant be clearly that is something else???

    Before you disassemble the laptop, try some simple stuff.
    Have you tested your AC adapter? Maybe the AC adapter died and the battery doesn’t have charge. Can you test the laptop with another adapter?

  290. Lahveen says:

    Hi,

    I have this dell laptop and its not working, I overheated it by accident and now it won’t turn back on at all. When i connect the charger on- its totally dead. I had this problem before but got it fix by a tech guy which cost me around $300. And its not my laptop so I really don’t want to get a new one as there are important files on it. Can you help me? what can I do?

  291. Repair Man says:

    @ Lahveen,

    When i connect the charger on- its totally dead.

    If the charger is good, most likely you have a problem with the motherboard or DC jack. I really cannot tell which one is failing without looking at the laptop.

    I really don’t want to get a new one as there are important files on it.

    Most likely your files are still safe. You can access all files using an external USB enclosure.
    Just remove the hard drive, install it into the external USB enclosure and connect this enclosure to any other working PC.

  292. Lahveen says:

    Hi

    Just replying to the previous message below. Yeah the charger is good I think it would be the motherboard? Do you know if this can be fixed or replaced? if so how much approx?

    Thank you

  293. Repair Man says:

    @ Lahveen,

    Yeah the charger is good I think it would be the motherboard? Do you know if this can be fixed or replaced?

    The motherboard definitely can be replaced but is it worth it? You’ll have to search on the Internet for a new motherboard and see how much it is. Prices vary depending on the laptop brand and model.

  294. RUSSELL says:

    I have a Toshiba satellite L300 and the battery charges when the laptop is off but when I turn it on and plug in a AC adapter it RESTART.. Does that have to do anything with the motherboard.. .

  295. subair says:

    i have toshiba satellite pro m70 laptop .its first i connect adapter led blinking after is not linght.,,how can i fix this

  296. Repair Man says:

    @ RUSSELL,

    I have a Toshiba satellite L300 and the battery charges when the laptop is off but when I turn it on and plug in a AC adapter it RESTART.. Does that have to do anything with the motherboard.

    Yes, it’s possible. What happens if you remove the battery and start the laptop just from the AC adapter?

  297. Repair Man says:

    @ subair,

    i have toshiba satellite pro m70 laptop .its first i connect adapter led blinking after is not linght.,,how can i fix this

    First, I would test the AC adapter. Make sure the adapter outputs correct voltage.
    It’s possible your adapter died and the battery doesn’t have enough charge to start the laptop.

  298. Ifte says:

    i have a laptop acer 5745,suddenly it’s mouse keyboar and cooling fan stop working.when i power on the laptop only one time the fan working for 4-5 sec,bt then its off.i use usb keyboar and mouse.when i enter into bios,i can’t see the power option and the serial number shows ???????AAAAAA something like that.i think bios is crashed.what can i do now?

  299. robert kaluba says:

    I have a toshiba M70 and when I turn it on only the light come on funs are rotating and all but the screen is blank. ram is also okay checked the screen and hard drive too.
    What could be causing this. Any help would be appreciated thanx

  300. alvin says:

    i have neo g41l series. when you plug the ac charger with battery inserted on laptop the charging indicator led is turn on.. but when you plug out the battery the ac charger led is off.. the unit won’t turn on… any idea how to fix? what parts should be the problem?

  301. tahir india says:

    i have toshiba m70 satellite pro,its working fine but when i m lifting ma lap it stuck or restatrt smtimes blue screen,if any1 interested in buying text me +919700158949 frm india anhra pradesh hyderabad

  302. drake says:

    My L310 have power problem. when I start plug the power adapter the light of DC indicator starts to flicker and when I remove the battery the DC indicator stops to flicker but It can’t start to open. The Battery is Ok because when I put it I can use my laptop, the only problem put my AC adapter in my laptop its start my my screen brightup then down. What I see my battery won’t charge up and see my battery icon plug then unplug the source. I try to mo touch the adapter and dc plug but it always that way. You think you could help me?

  303. ero says:

    my compaq presaio cq40 is not formatting. It does not pass ‘setup starting windows’ i have use almost all the operating system but its still the thing. I need your assistance.

  304. gary says:

    My Toshiba Tecra M1 wont turn on -All there is a blinking amber light on the power symbol.Thanks for any advice.

  305. frenchmal says:

    Hi ,

    on my laptop Brand ” Toshiba satellite A200 2BH ”
    the fuse on the motherboard seems to be blown…?
    the ac adaptator is on and work (tested)
    where do i find the main fuse on the motherboard?
    Do you have photo please

    Regards thank before

  306. Sokolayam says:

    pls sir i have a Laptop Dell Inspiron 150m and if i power it on when the battery is on it, it wil not ON but if i remove the battery it wil ON. pls what is the problem sir.

  307. sandie bryan says:

    Hi,good afternoon i ave a GATEWAY laptop but whenever i plug in to charge it switch off and won’t come on for days. Now it’s not coming on at all. One day it was charging n it drop with the charger plug in. Please can u tell me wat is the problem.

  308. Christian says:

    hola. tengo una toshiba Satellite A305-S6872, el problema es: enciendo la laptop y anda todo los leds pero pasa de 10 a 15 segundo y se apaga y se inicia. luego de tanto inicios enciende pero queda en el logotipo de windows 7 y no es legible.. lo conecte a un monitor externo y pasa lo mismo.. probe con un cd booteable de windows xp portable y arranca bien ni un tipo de problema, tambien probe con el hairen boot y anda todo.. Cual es el problema de mi lapto?? “” sera el sector de arranque del disco duro””” ya me fije el chip de video y a simple vista se ve bien no esta dessoldado..

  309. shereen says:

    i have a msi cr500 laptop the plastic case (cover) that hold the screen broken i do not know what u call it if anyone knows it pls inform. in order to search for it in order to buy it

  310. Pablo says:

    My Acer travelmate 5742G laptop doesn’t want to turn on,when I press the power button there is no LED activity showing that the laptop is still working even when I insert the charger the LEDs doesn’t show,I don’t know what’s the problem…I need your help please?

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