Question about IBM ThinkPad T21 Notebook

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  • ZJEFFSTER Dec 16, 2007


  • ZJEFFSTER Dec 16, 2007

    hello can any one help please need to find out what to do to remove cmos password please its ibm thinkpad T21



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Posted on Dec 16, 2007


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I need to reset my bios password

Hello, locate the small round CMOS battery on the motherboard and take out the battery. Replace it after about 5 minutes and you can then reset your password. YouTube has videos to help locate your brand of computer's CMOS battery.
Open the computer case and find the battery on the computer motherboard, verify that it is accessible and can be removed. Today, most computers use a coin cell CMOS battery.

Oct 04, 2014 | Computers & Internet

1 Answer

I Bought A laptop at a pawn shop . its a 7730 the person who sold it had a bios password code . How can I reset it ? I need to update everthing on it but can't

Remove a small coin sized CMOS battery to store all BIOS settings along with the password. To reset the password, unplug the PC, open the cabinet and remove the CMOS battery for approx. 15-30 minutes and then put it back. It'll reset all BIOS settings as well as the password and you'll need to re-enter all settings.

Under the keyboard or bottom of laptop - If you are working on a laptop computerthe location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment.

If it fails, then try to remove the cmos battery for at least one hour.

Feb 20, 2011 | Computers & Internet

2 Answers

I have pasword in bios and im need unlocked


All you need to do is to remove the cmos battery of your laptop and power on, your laptop will boot up and will not ask for the password anylonger.

You can later put back the cmos battery.

Take care.

Apr 15, 2010 | Computers & Internet

1 Answer

My computer shows a message like this on the start : "this computer system #7WQ6V3J-595B, is protected by a password authentication system, since i bought this laptop in a "used sale fair" i dont know...


the computer has been locked from the bios settings.

What you need to do now is to access the Cmos battery on the laptop, remove the Cmos battery and turn on the laptop without the Cmos battery.

The Cmos battery is where the laptop memorizes the password and stores it. So when the Cmos battery is absent, the computer cannot remember any password

The Cmos battery is like a watch battery, but its bigger than a watch battery. You can find the Cmos battery when you loose the laptop from under. But you must first remove the laptop battery before you loose the laptop. You can open the link below to see what a Cmos battery looks like:

You can also check the below link for more information about the bios.

Take care.

Mar 01, 2010 | Office Equipment & Supplies

1 Answer

Hi i had bought a Panasonic cf-52 from someone they owner gave it to me with a password he told me the password but when i got home i had forgot it and now i cant reach him is there a way i can fix this

YOu can reset bios password with 2 method.
(1) open back cover of laptop then find motherbord .Pull cmos cell from motherbord for 15 minutes then again put it in it's position .then it not ask for password.
(2)You can clear password with jumper settings find jumper on motherbord named clear cmos it has 3 pin .1-2-3
Put jumper in 2-3 position then again put it in 1-2 position then check .
Let me know if you need more assistance.

Nov 10, 2009 | Panasonic ToughBook 52 Notebook

1 Answer

My toshiba equium just wont except the main password, cant reboot..cant get into bios

At this time you need to cleat the BIOS password first so that you can get into BIOS. To cleat the BIOS password you need to open your laptop you just remove the battery first. Remove the screw and open the back cover. Locate the CMOS battery, all password are stored in CMOS memory.

Remove the CMOS battery to clear the stored BIOS password, Or you can remove also the CMOS jamper near the CMOS battery and turn on the unit with in 10 second and turn off. Reinsert the jamper. Now the BIOS password are already clear you can get now in BIOS to change some settings. Good luck

Oct 08, 2009 | Computers & Internet

3 Answers

Sony laptop - phoenix bios password forgot .

You need to contact the manufacturer.

Most computers rely on one of three mechanisms
to reset a BIOS password.

1) Remove the CMOS-RAM 's keep-alive battery from the
motherboard, causing the CMOS-RAM to be cleared,
and the computer to revert to factory conditions.

This is typically a small silver cylinder, the size of a coin,
clipped or soldered onto the mother board. This is NOT the
same as your main battery pack.

2) Bridge (short circuit) a special jumper on the mother board
to clear the CMOS RAM. You need to know which jumper.
Shorting the wrong one could fry the computer.

3) A non-invasive reset using a secret code, key stroke
sequence or an RFID tag/dongle, similar to your car
immobilizer, which requires sending your laptop back to
the factory or authorized service center.

Modern laptops employ much stronger security measures, than
desktops, precisely because they are so portable and easily

1) Each laptop has a unique serial number, permanently
programmed at the factory.

2) The BIOS password is much better protected.

3) Many laptops contain a proprietary crypto-chip, which
can be turned ON to prevent the hard-drive in a stolen PC
from being read or accessed.

4) Many laptops now have unique RFID tags embedded
which can be accessed from a distance to ID a lost
or stolen PC.

5) Many laptops with Broadband or Wi-Fi will periodically
call home, using dedicated WEB servers, and report
their GPS co-ordinates. This feature cannot be disabled.

For security reasons, manufacturers will not disclose their
secrete codes and features over the telephone, you may have
to send the PC back to them.

Sorry I could not be of more help.


May 08, 2008 | Computers & Internet

1 Answer

Power on password help

you will have to locate the cmos battery and remove it and keep it aside for 10 sec and reconnect it and it should solv the problem make sure the laptop it disconnected from aapter and battery .

May 01, 2008 | HP Compaq nc6320 Notebook

1 Answer

Systemax Laptop Need Restored

Are you talking about the operating system admin password, or the bootup CMOS settings password(s). If it is windows, you can find the administrative password by downloading one of the freeware utilities at this link:

If it is the CMOS password, you can reset it by removing the coin battery on the motherboard on the laptop (this can be *very* tricky depending on the laptop make/model)


Jan 01, 2008 | Microsoft Windows XP Home Edition

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