Removed viruses, computer wont boot to desktop, Cant get into bios?

Hi people,

Found heaps of win32 viruses in my girlfriends computer. (Using Avast). Couldn't repair any of the files so I deleted them. (yes, i shouldnt have, kicking myself allready).

Restarted comp and now it boots to login screen. If i press ok to go in it just logs off and goes back to the same screen.

Avast does popup when re-starting saying that running avset.exe would be dangerous. Either pressing yes or no to run program doesnt change anything. Still can't log in.

I cant get into the bios to change the boot order, tried F2, DEL, ESC (if i could get to change boot order, my recovery cd would work)

F8 does bring up the Safe mode, etc, screen but Ive tried running all and no difference.

ANY SUGGESTIONS??

1. Take drive out an run it as another drive on another computer.?

2. Try and get a startup disk for dos?

3. Some sort of program for a USB drive to try and boot up that way?

Thats all I can think of... Thanks guy/girls

Removed viruses, computer wont boot to desktop, Cant get into bios?antispyware

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