780i few problems

[joker12578]

Bro's magic flash drive. So he came over and installed a few games, and god only knows why he was thinking I wanted them on both computers. So got the game, and turns out his flash drive had an auto run with a win32.buzus. Dropper or something it was downloading a lot of junk. Been great fun : /. Anyways, I got lucky enough so far to remove the virus and now I have two problems. One computer with 780i(mobo) drivers wont let me reinstall the drivers. The hardware has a yellow ! mark, I have tried to uninstall/reboot and reinstall the drivers from the cd but it hasn't worked. Problem 2 is that both computers can't go into safemod any more. I can get into windows on both just fine, but safemod crashes with a blue screen. I really want to stay away from formating, hope there's some other way.

Any ideas? thanks

EDIT: case this helps here's a list of the drivers that wont install.
1394 net adapter
direct parallel
nvidia nforce network controller
WAN miniport (IP/IP kaspersky/L2tp/PPPOE/PPTP)