Yesterday, when I came home, I found my pc off. (My PC's specs, see sig.) Supposedly nobody had done it. So I booted it up, and a window popped up saying "McAfee AntiVirus hadn't started properly, and it needed be restarted. If the same error came up again, McAfee needed to be reinstalled." So, I rebooted it, and typed in the password to log in to the desktop. The screen flashed then restarted! The cycle went on several times, so I just turned it off. I'm asuming that it's a virus, which is a BIG pain because I have a bunch of stuff I need to do on it. What should I do? (I just backed up last Thursday, so I won't lose a lot of info.)
Thanks a lot!