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I am simply trying to disassemble to remove CMOS battery. I can't find a manual and don't want to break anything

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Most laptops don't use a CMOS battery anymore. The old CMOS, as it was called, is now the "Flash BIOS" or simply BIOS, and the Flash chip has it's own non-removeable,non-accessible battery.

Posted on Apr 04, 2011

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We have absolutely no idea what the machine that you are working on is.
Please try again.

Posted on Apr 04, 2011

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Posted on Jan 02, 2017

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1 Answer

Bios Password Recovery for HEWLETT-PACKARD Probook 4530s


It is not possible to recover the BIOS password, if you remove the CMOS battery the password is wiped, but this requires that you open and possibly disassemble your laptop which requires a certain level of skill so you don't break anything.

Dec 29, 2013 | HEWLETT-PACKARD Probook 4530S

1 Answer

How to remove CMOS battery for A215-S7444? I done a search and got this answer: "This should help: * Remove Laptop Battery * Remove Memory Cover * Spread spring clips to outside and * pull out RAM...


What are you trying to do? Replace the CMOS battery, or reset a BIOS password?

This is what the CMOS battery looks like,

http://www.ebay.com/itm/CMOS-RTC-Battery-Toshiba-Satellite-A210-A215-Series-/270970735656?_trksid=p4340.m263&_trkparms=algo%3DSIC%26its%3DI%252BC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D15%26pmod%3D160437620636%26ps%3D63%26clkid%3D8748715535548215160


Now view this pictorial disassembly guide,

Page 1 - http://www.irisvista.com/tech/laptops/toshiba-satellite-a205/laptop-disassembly-1.htm

Page 3 - http://www.irisvista.com/tech/laptops/toshiba-satellite-a205/laptop-disassembly-3.htm

Go to the photo in Step 17, and click on it to enlarge.
See the CMOS battery in the middle/left?

Round silvery looking object. Go straight down from the red arrow to the far left.

That is how to access the CMOS battery.
(Yes I know it states Satellite A200/A205. Same for the A215)

Now BIOS password reset?
Do not know where the two copper pads are to briefly short out. Suspect under the Ram Memory modules, (And under a small sheet of Mylar plastic), or under the Wireless Modem. (And under a small sheet of Mylar plastic)

The links on this solution I gave may help,

http://www.fixya.com/support/t6645137-toshiba_l500_clear_cmos

For additional questions please post in a Comment.
Regards,
joecoolvette

[ Am I concerned that you may have stolen the laptop, or are trying to break into someone else's laptop?
NO
Your real name, and IP address are recorded on FixYa, to give to the authorities, if needed.

I figure a thief would not risk this ]

May 28, 2012 | Toshiba Satellite A215-S7444 Notebook

1 Answer

P000262960 cmos battery replacement


You should be able to find it online, assuming your notebook is a Toshiba Tecra 8000. about $15.00USBD EX postage... check postage... there are two on ebay but ridiculous $65USD postage!!!

http://www.memorydepot.com/B-4335.htm

has them available, (after a quick google, the first link) for $15.00, but I haven't checked their postage rates...

just an example..

another option would be to disassemble the bios battery pack, and identify the individual cells, as the Tecra 8000 uses multiple cells tack welded together. you could then replace them, assuming you break the old welds neatly, using a razor blade or the like, install the new, and ideally tack weld them back in place...
If you have the equivilent of a "battery world" in your area, they should be able to do it for you...

The tecra is not too hard to disassemble, just don't force anything...
again, if you're not familiar with disassembly of notebooks, consider using a professional to do the job, but as its a rather old model I suspect you'll probably do it yourself.

You can probably find service manuals, DIY tutorials, etc on the web and on youtube for the tecra 8000, its a very common, old, notebook.

Hope this helps.

May 15, 2012 | Toshiba P000262960 - System Board, FSFSS1...

1 Answer

How can I get into the BIOS to change boot sequence when I don't have the password


Remove the power cord, remove the battery and then remove the CMOS Battery which is normally attached to the motherboard. Most times you will have to disassemble the laptop to get to the cmos battery. Once you remove it let the computer sit for an hour or so and it will forget the date, time and passwords without that cmos battery being in. Put the battery back in after time elapses then see what happens.

Mar 25, 2012 | Computers & Internet

1 Answer

How to Break bios Setup Password


This information is intended for experienced users. It is not intended for basic users, hackers, or computer thieves. Please do not try any of following procedures if you are not familiar with computer hardware. I'll not be responsible for the use or misuse of this information, including personal injury, loss of data or hardware damage. So use it at your own risk.

A. By Using the Motherboard Jumper:

In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.

Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.

When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.

Make sure to turn the PC off before opening the cabinet and resetting the jumper.



B. By Using Software:


I have found that BIOS/CMOS Password Recovery Tool is the most effective.:
BIOS/CMOS Password Recovery Tool is a program that works instantly to remove any lost or forgotten BIOS/CMOS password. Simply boot your PC to DOS and execute the program, and get access to forgotten BIOS/CMOS passwords in just seconds

BIOS/CMOS Password Recovery Tool Service: http://www.biospasswordrecovery.com/

May 14, 2010 | Toshiba Satellite 5105-S501 Notebook

1 Answer

I need instructions on replacing cmos battery? Where is it located on the hp compaq nc 6220 laptop


Hello,

Please click here to open the service manual

1.Prepare the computer for disassembly (refer to Section 6.3, “Preparing the Computer for Disassembly,” for more information).
2.Remove the cmos battery (refer to
Section 6.24, “System Board,” for more information on removing and replacing the RTC battery).

CompQ

May 12, 2010 | HP Compaq nc6220 Notebook

2 Answers

Where is the location of the Cmos battery for my


You really need a service manual to try & locate the CMOS battery. With laptops the CMOS battery can be different on each model. These are often located on the motherboard below the keyboard, but a service manual should help you.

Nov 01, 2009 | Acer TravelMate 240 Notebook

1 Answer

Need to unlock bios password on dell laptop, have service tag # and ends in 59b


Hi,

If you have loast the password, to reset the BIOS password you need to remove temporarily the CMOS battery , so to reset BIOS settings.

Some model may be using NV Ram, in that case removing the battery is not enough.

The battery is located on the lower side on the motherboard.

On many DELL models the battery can be accessed from the side of DVD slot, battery slot, or RAM slot, without disassemblying the laptop.

On some model you may need complete disassembly (eg. Dell Le series).

The battery looks like a couple of coin batteries wrapped in plastic.

Before disassemblying or removing covers, always unplug adapter and remove battery.

On Dell Inspiron 8500 the battery can be accessed from a side , after removing the primary battery.

I think Dell 8500 can be set to use NV Ram to store the password.
In this case the problem cannot be solved removing primary battery, then accessing and removing CMOS battery for few minutes.

If you still cannot reset you have two way out.

Disassemble completely and access the NVRAM microswitch, or contact Dell and get master password.

You can also try one of this standard Dell factory CMOS password:

ALFAROME
BIOSTAR
biostar
biosstar
CMOS
cmos
LKWPETER
lkwpeter
setup
SETUP
Syxz
Wodj
Dell






Sep 11, 2009 | Dell Inspiron 8500 Notebook

2 Answers

How to break bios password


remove CMOS battery for 1 minute then try to install it back

Jun 08, 2009 | Intel D945GCCR Motherboard

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