nozero

Right click my computer, select properties, go to the restore tab and if the option is there, it "should" work.

An option to this is http://home.eunet.no/pnordahl/ntpasswd/ - we use this at work all most daily to change or delete admin and or user passwords. It works best when you delete rather than change the password in question. This works in Win 98 through Vista Ultimate 64 bit. I've not yet tested it in Windows 7 64 bit.

If it works, I strongly suggest doing a deep scan of your PC, if your password has been compromised, you may have a key logger or other trojan present.