SOURCE: Startup Password IBM Thinkpad T40
How to Reset an IBM ThinkPad Power On Password Using Hardware If you cannot boot the ThinkPad, you will have to reset the IBM ThinkPad password via hardware. If only the power-on password is set, do the following to remove the power-on password. Power off the computer Remove the DIMM cover on the bottom side of the computer. Short-circuit the two password pads or put a jumper on the contacts to short the circuit. Under the short-circuit condition, power on the computer and wait until the POST ends. After the POST ends, the password prompt does not appear. The power-on password is removed. Reinstall the DIMM cover. If both the power-on password and the supervisor password are set, do the following to remove the passwords: Power on the computer by pressing and holding F1. Enter the supervisor password. The Easy-Setup menu appears. Click on the Password icon. Click on the Power on icon. Enter the supervisor password and press the Space bar. Press Enter twice. Click on Exit; then click on Restart.
SOURCE: forget BIOS Password (Laptop - IBM Thinkpad Lenovo R60)
For that you need to reset factory defaults settings for bios.
For reset bios u have to open back side of your laptop then u find motherbord circuit there.
pull cmos cell on motherbord for 15 minute then it reset to defaults.
Also u can reset with jumper settigns read carefully on mother bord there is 1 jumper near cmos cell u read there " bios reset or clear"
It is on 1-2 position right now set it in 2-3 position then power up then all bios settings are reset.
then again set it in 1-2 its original position.
SOURCE: I need to clear my Bios Password for My IBM Thinkpad R52
OK, I posted this the other day, so for the benefit of those who missed it. "None" of these techniques will work on the R52, as it has a different chip. The above well intentioned solutions mentioned above will work with older models but not this machine as the bios chip has been changed. FYI
SOURCE: Give me IBM ThinkPad T40 2373 PC Notebook Audio
This is Lenova Support, and the download page for the drivers, for the IBM Thinkpad T40,
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-46258
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