It took two weeks, but I'm back with my pc working properly once again
new power supply?
yep, and new BIOS battery
Always nice with a new BIOS battery...
a small trick, if you can't remember the BIOS password. disconnect the computer from any electricity, remove the battery and try to turn on the computer without electricity. BIOS password should then reset, Specially on old computers... from there you can get in to DOS and delete Windows password, Specially on those old DOS based Windows like W-98, W-2000 etc. I have done it to an W-Vista and an Windows server.... The admin at that work place was giving me the finger at that time....