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 (here’s an example http://batteries.sanyo-component.com/fileadmin/EDITORS/BATTERIES/industrial/datasheets/lithium/ML1220.pdf)

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.

Where can i find the Cmos on the compaq presario r3000?

I’m not sure if disconnecting the CMOS battery will help to get rid of the BIOS password. Maybe you can find this info in the service manual for Compaq Presario R3000 notebooks here: http://h10032.www1.hp.com/ctg/Manual/c00212209.pdf

I need to bypass a bios password.

Is there an other backdoor to compaq notebooks other than “compaq”?

Thanx in advance

Is there a way to reset the bios password on the satellite a215-s5825?

If the BIOS password was set by the laptop, call Toshiba and explain what’s going on. Most likely they will clear the password at no charge.

If removing the battery does not reset it, is there a method i can use to do it? any jumper settings that may get it done? or anything?

The password is cleared by shorting two contacts on the motherboard. I cannot tell you more. If it’s your laptop and registered on your name, call Toshiba and most likely they will help you.

Whats the Number of this Bios Battery??

http://www.laptopparts101.com/wp-content/uploads/2008/12/cmos-battery-under-top-cover-560×420.jpg

I believe it’s Sanyo ML1220 rechargeable battery. Used in many newer Toshiba laptops.

http://www.laptopparts101.com/wp-content/uploads/2008/12/cmos-battery-under-top-cover-560×420.jpg