I have a user who recently got a virus (one of those ones that keep popping up saying your computer is infected, and click here to buy the virus removal software) I cleaned the virus and now scans are coming up clean, but the shutdown and restart buttons don't work. Even the restart now button on the automatic updates doesn't work. I press the buttons but nothing happens, the computer doesn't freeze or anything (the user can continue working normally), but it never shuts down. How can I fix this without wiping the hard drive and reinstalling Windows XP? I'm reluctant to reinstall because they have some older programs on there that they use alot, but no longer have the software for.