i don't know if this would help at all. but it's just a suggestion and it helped fix my problems when no other spyware/virus program could.

http://safety.live.com

is a site run by Windows with 3 different scanners "Protection" "Clean Up" and "Tune Up". i ran all 3 of those (separately) and it found and fixed like a gazillion probs on my pc.

hope this helps!!