Aloha, please direct me to the correct thread or assist me with this one.

After loading a new copy of WinXP SP2 on to an existing computer and copying over files that I thought were clean (they had been scanned), I ran Spybot and there were still 9 malware. They were removed. When I restarted the computer, it sent me to the choose user screen and then signs off immediately when the user is selected. This occurs even in safe mode where the administrator is also a user option.

Any suggestions? Mahalo for the help! Aloha