I'm trying to help a friend who has apparently picked up a virus. He didn't have anti-virus software, so when he started noticing problems he bought Norton. By then it was too late; Norton will not install. I tried running Microsoft's safety scanner, but the installation just hung. I couldn't even install the necessary ActiveX controls. It appears that nothing will install.
I suspect that even if I can get rid of the virus(es), the system is probably too damaged to be useful. I'm considering just reinstalling from scratch, but I thought I'd see if there was any other alternative.
Any suggestions would be appreciated.