My computer was infected with the Vundo virus. I first noticed it when the desktop icons blanked. I ran Anti-Virus programs; however, they would only loop once they finished. I booted into safe mode (icons still disappeared) and tried from there--still would loop (used McAfee, Anvir, etc). Anvir found Vundo but would also loop. Manually tracked down offending files and deleted them, edited out entries in registry so it would not access them, and set computer to boot into safe mode. Upon reboot, computer now asked for password for both Admin and my account (did not have one before). Used Ultimate Boot CD for Windows re-ran virus checker and Spybot both cleared files. Attempted to access SAM file; however, it was locked from user access as was C:\Windows\system32\config\default. Used Password Renew to set up another account with Admin access. Now the system will not boot. Attempts to go to the Safe Mode password logon screen and resets. I have a DriveXML backup that is one year old. I do not want to use it. Is there some way to fix this? I feel like I am close to correcting the issue. This nasty bug has stopped me at every turn. Any help would be appreciated.