I've encountered this weird problem with a system/user. When I attempt to login as a particular user on Windows 7 PC. After typing the username and password the screen says "Welcome" and the little round thing spins for a couple second then the system goes back to the Ctrl-Alt-Del screen. The user can login to other Windows 7 systems on the domain no problem and I can login other domain users on this PC even users who have not logged into this PC previously. The user had a domain profile on the PC so I blew that away through the "Advanced" tab under System Properties. Still couldn't login. Checked for viruses and the system was clean. Any help would be appreciated.
Windows 2003 domain
Windows 7 Pro 64 bit