Erasing a lost or forgotten password (clearing CMOS) - ThinkCentre A50, S50
This section applies to lost or forgotten passwords. For more information about lost or forgotten passwords, go to Access IBM.
NOTE: Some models have a POV daughter card installed on the system board. In these models, the password is stored in the EEPROM on the POV card and cannot be erased. See "Identifying parts on the system board" for the location of the POV card.