Found an old works LT and am trying to rebuild it clean. Its an IBM thinkpad. There is no CD/DVD though I have one that plugs into the USB and a clean version of XP 1st problem it won't boot and stops, reporting error 0271 chk date and time settings followed by a screen with a padlock. Obviously this means I need a password but I don't know it and the company has gone away so can't ask. I can get to boot set up by cntl+s but it won't let me change any of the settings. The Access IBM button doesn't work either and stops at the above error. I suspect that buying a new HD won't help, how can I change the bios settings back to manufacturers default.