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Bios how to reset ibm thinkpad t40 bios password i did remove the cmos battery but it does not work

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None of that basic stuff work on late thinkpad. solution.
flash/replace bios chip
build dongle to read bios chip using xternal monitor
all require an expert or parts and soldering skill
u can get the replacement on ebay about USD14-15 and i show you how but you must be able to solder
could also send you one but would take a little while i'm in jamaica

Posted on Apr 17, 2008

  • Edu Aggrey May 08, 2012

    Hi, my name is Edwin. I would like you to assist me with the schematics and necessary information required to build a dongle. I have knowledge of electronics and can solder. Just need info on what to acquire and the schematics. My email address is aggrey69@gmail.com. Will appreciate the assistance.

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2 Answers

How to reset bios password ibm t40


remove main battery ,then internal backup battery,,wait for 15 minutes then reinstall both batteries & power on pc

Mar 21, 2015 | IBM ThinkPad T40 2373 Notebook

1 Answer

I need to rest password in bios


Hi,
Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared. BIOS password can be removed by temporarily disconnecting/ removing the RTC/ CMOS (Coin-cell) battery from the motherboard.
Disconnect the coin-cell battery from the system board and it will reset the BIOS to its default setting and the password would be gone.
Please Refer to Page 29, 106 & 79 of the REPAIR MANUAL IBM T40 for Battery removal, keyboard removal and RTC battery removal instructions.
The Backup Battery (RTC, CMOS) is located under the keyboard. So you have to remove the keyboard to access the battery. The above Manual from IBM shows the exact method/ instructions and pictures for laptop dis-assembly for the purpose.
If you are comfortable with working inside such electronics, you can't do it yourself, or else you may seek help from local laptop service professional.


Hope it helps! Good Luck! Thanks for using Fixya!
CreativeTECH

Jun 21, 2011 | IBM ThinkPad T40 2373 Notebook

1 Answer

Forgot password to my ibm thinkpad 2373


Which password have you forgotten? If it is the Power On password this can be reset by briefly removing the connection from the system board to the cmos battery. If it is the Supervisor password you can either send it to Lenovo for a replacement system board and hard drive or send to me and I will return with password removed. fixmythinkpad@btinternet.com Regards Paul

Jan 30, 2011 | IBM ThinkPad T40 2373 Notebook

2 Answers

Need to get past the bios password on my thinkpad T40. What can I do?


write it down all the bios settings. and remove laptop keyboard by removing screws back side of the laptop (small embosed picture indication remove those screws) and just lift the keyboard and search for cmos battery, see below picture , just unplug the battery and keep unpluged for minuite or two. and connect the battery. fit all the opened cover and restart . best of luck

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Jan 15, 2011 | IBM ThinkPad T40 2373 Notebook

2 Answers

Hello how to reset bios password of ibm thinkpad t23 2647


Hi,

To unlock the bios password on your laptop, you will need to remove the cmos battery on your laptop for some minutes and insert back, the cmos battery is located on the motherboard of your laptop, once the cmos battery is removed from the motherboard for some minutes, the bios password will be reset, and that fix the problem.

Take care.

Nov 19, 2010 | IBM ThinkPad T23 2647 Notebook

3 Answers

Remove Bios Password ibm t40


ON YOUR WINDOWS ENVIRONMENT open command prompt, or MS DOS prompt type this:

debug
o 70 2e
o 71 0
q

Then restart...

Oct 21, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

I CANT GET MY IBM THINKPAD TO UNLOCK


it depends on what you want to unlock:

for the BIOS, just remove the battery for 24hours then the BIOS will reset / else have the BIOS battery removed for at least 1 hour.

for more information:

http://sodoityourself.com/hacking-ibm-thinkpad-bios-password/

Oct 16, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

Need help t40 bios.lost my password can i buy a disc?


take out the cmos battery and put it in again.let me knw if that works

Sep 20, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

I'm trying to clear the bios password on my girlfreinds thinkpad t40.... I've removed the cmos battery and was going to leave it out for an hour or so ....... will this work?


An easier solution is to use a backdoor password for your laptops' model to clear out the bios password. For IBM, the backdoor password is merlin

Dec 03, 2008 | IBM ThinkPad T40 2373 Notebook

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