Please also see this homepage for more information regarding removing passwords from IBM ThinkPads. 240  Short the jumper JP1. 310/310D/310E/310ED  Use switch SW2 near CPU socket (second bit switch counting from the lowest side). ??? , 365C/365CD/365CS/365CSD/365E/365ED  The following procedure disables user and supervisor passwords: 355x , 360x , 370C/750x/755C/755CS  How… Read More »
This is a short one: For skipping the password check, you have to hold down both mousebuttons after power-on until the first beep. If this doesn’t work, try to press both mousebuttons repeatedly.