If this is a bios password, taking out the CMOS battery should clear it.
This does involved gettign access to the laptop motherboard. Remove the small round watch battery and give it five minutes.
Then replace battery and power on. Voi-la! Your CMOS settings have been cleared. Any custom settings you had in the bios will need to be re-applied - should work fine however.
Tom Steventon - TBCWorkshop, September 2006