I was instructed to post my issue in this forum by Rorschach112.
Windows XP Mediacenter Edition sp2 was/infected with some malware, and during the removal process i rebooted the computer, and when i login, the desktop flashes for a second then immediately logs back off and brings me to the login screen. This happens with all account in "normal" mode. When i boot into safe mode everything operates fine. I tried "last known good configuration" and that didn't work. I hane not tried a system restore yet. Any help will be greatly appreciated.