This is a diagram of the EEPROM 24RF08, you should solder onto the GND, SDA, and SCL this is where you are going to get your Password. These are just some example of the EEPROM. There is an 8 pin EEPROM and a 14 pin EEPROM and both of these EEPROM are from ATMEL. In the diagram below in red are the pins, which you will need to solder onto the EEPROM to recover your password.

Here goes the Datasheet in PDF format, you will find some addition information on how the Chip works.

IBM ThinkPad EEPROM Chip

TThe notebook computer BIOS password is not like the desktop model password, this is easy to explain! The desktop model machine’s computer BIOS password stores it in the motherboard CMOS electric circuit. This electric circuit must depend on the motherboard CMOS battery to maintain its data. Therefore, the majority of desktop model’s BIOS passwords are stored as long as the motherboard CMOS battery doesn’t go dead, or vanish into thin air. However, with the notebook computer, if the CMOS battery is removed, the BIOS password will not disappear at all. The BIOS password is stored in the EEPROM and the CMOS battery will not affect the password.

In the notebook computer, the design has a special EEPROM password memory chip. Take the IBM notebook computer as an example, the commonly used memory chip includes: 24C01A, 24C02, 24C03, 24RF08BT, 24RF08CT, 24RF08CM and so on. In different kinds of notebook computers, the EEPROM chip and other kinds of commonly used 93C46. The EEPROM chip belongs to the serial chip. The chip data certainly does not need to draw support from the outside battery to be able to be maintained. In the chip data, which writes data can maintain it for 10 years under the normal temperature. The 24C series chip generally used in IBM ThinkPad 600E machine and the 380, 390, 600 and other models. The 24RF series chip, uses the improvement data transmission and the preserved way. Keeping secret the performance to be stronger generally is used in the 600E later machine, like 600E, A, T and R series. Like the charts below, the IBM TP600 on the notebook computer motherboard EEPROM password memory chip is located on the motherboard nearby the PCI main line control chip. The chip model is AT24C01A. When the user password is established and the preservation of the BIOS is established, the system carries on the operation and compression processing. Then the user inputs the password and processes the password data preservation in the EEPROM password memory chip. It has been clear about the EEPROM chip mode, which the BIOS password saves on the chip and can be located on the motherboard. If you have really forgotten the password, there is a possibility to let "the machine discards" this event occurrence, because each notebook merchant has already inform users not to forget their password. This situation carries on to the maintenance manual, if you are really persist on repairing the notebook then one should prepared himself to take out money to replaces the new motherboard.