This is coming from a fellow computer repair person. I dont repair to many laptops and I think this is why…

I have here a Compaq 2510c. The Startup/Bootup password is unknown to the user. I used the documentation from https://computinghardware.web.cern.ch/ComputingHardware/DOC/HP/HP-2510p/c01095444.pdf that shows how to fix it on page 39. It says basically to remove batter and then RTC battery for a few minutes and then replace it. I’ve done this very carefully. Now, the screen wont show anything. It seems as though the HDD works fine since all lights are coming up correctly. Any suggestions? I’ve reseated stuff just to double check likely 5 times. Looking for any tips here

Whats the worst thing that can happen if I stick a 3volt battery in a 1.8v socket? I know the trace on the Motherboard can hold alot more than 3 volts. But as far as the bios chip?

I don’t know, never tried it myself. I don’t think that a 3 volt battery will damage anything.

I know and heard of toshiba and other companys making “Backup RTC Batterys that you just plug in somewhere on the motherboard”. Not sure where but i dont think it would hurt to put a 3v battery in a 1.8 socket. worse case scenario once it ran for awhile it would never fully charge up because the A/C adapter would only trickle it to a certain voltage. It would be stronger but im sure a bios chip would hold it. I can see 2 volts max hurting anything.

Just for kicks im sure it would remember wierd things like what you ate yesterday and it would be stored in your bios. You would load up windows and it would ask you.

…Press any key to boot from Cheeseburger….. LOL!

I have a Toshiba Satelight L45 Series. It has a soldered CMOS Battery like most Toshibas. This is what my motherboard looks like. The battery is to the top…

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-L45/big/toshiba-satellite-l45-disassembly-17.jpg

Toshiba wants me to replace my entire motherboard. I wont do that because it works perfectly exept for this battery needed replaced.

Does anyone have any clue what battery or what voltage this battery is???

Not sure 100% but check out this one:
http://www.pchub.com/uph/laptop/48-25680-8305/Panasonic-ML1220-Cmos-Resume-RTC-Battery.html
Looks like same battery.

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-L45/big/toshiba-satellite-l45-disassembly-17.jpg

Toshiba wants me to replace my entire motherboard. I wont do that because it works perfectly exept for this battery needed replaced.

Does anyone have any clue what battery or what voltage this battery is???

A common small trap some people are unaware of, some soldered Cmos Batteries run at 1.8V and not the standard 3.3V of a CR2032 this is just one thing to be aware of

All motherboards are different.
For example, in most newer Toshiba laptops CMOS batteries run at 3.0V

Quote from another site “my laptop does not work it has a blank screen powers up and dies”.

A typical time wasting answer to that is something like “have you tried the recovery disks” it really makes me want to scream when people don’t read the question properly. What possible use are the recovery disks if its CMOS battery or chip has possibly died!

LOL!
How can you run the recovery disc if the laptop is dead???
By the way, in the above mentioned scenario I would check the AC adapter first and RAM modules after that. It’s possible one of the modules is bad.

Sadly good help is like a needle in a haystack and everybody things their a pro. `not getting at anyone on this site btw’

Quote from another site “my laptop does not work it has a blank screen powers up and dies”.

A typical time wasting answer to that is something like “have you tried the recovery disks” it really makes me want to scream when people don’t read the question properly. What possible use are the recovery disks if its CMOS battery or chip has possibly died!

EEprom blower!!!!!!

I will hasen to add that a dead Acer 1800 battery brought me here

I have a Toshiba Satelite M45 S165 laptop(5 years), and I think I a have a Cmos batery problem. It all started 1 year ago when the time keep falling behind. 2 days ago I took out the main battery, and after that the laptop woudnt start again. If I manage to enter BIOS, the time is freezing after 3 second, and nothing,I have to unplug the AC, and take out the main Batery to shutdown the laptop. I think the problem is the Cmos batery, which is soldered to the MB.
I dont know what tipe is it, and where to buy a new one.

I don’t have this motherboard and cannot confirm what CMOS battery it has, but I believe that Panasonic ML1220 might work.
Google for Panasonic ML1220 and you’ll find it. I found this battery on another Toshiba motherboard and it looks similar to one installed in a Satellite M45.