Did your IBM ThinkPad Supervisor password? This involves a bit more than just removing the backup battery, the supervisor (SVP) password is stored in a chip called ATMEL 24RF08. It can not be reset by disconnecting the BIOS battery or shorting any jumper. SoDoItYourself has an article detailing the retrieval of password data from an EEPROM. Although IBM claims their TP BIOS passwords are impossible to break, there is a easy and cheap way to fix this. The stuff you need cost about 5 $ at your closest radio shack type of store, you will also you need a spare PC with a serial port. Once you have done all the soldering you will also needs these 2 programs to help you dump the password
http://www.allservice.ro/forum/viewtopic.php?t=61 –programmer
http://www.allservice.ro/forum/viewtopic.php?t=56 –IBMpass Lite
alternative dl site

via: sodoityourself.com/