On Tuesday I attempted to clean the spyware and other malicious wares from a friend's PC using micrsoft's safety.live.com. When the scan was finished and I attempted to finish up, as I click the next button the PC shut down. I logged back on and attempted to scan again this time the pc shut down and now I'm not longer able to enter XP through any of the user accounts. I've tried going through safe mode without success. Anyone has/had this problem or knows what to do? Any help will be greatly appreciated.