What scans? A lot of people are under the mistaken impression that they only need to scan with a single virus scanner tool, and that will catch everything.
I don't know how to really say this but recently I've been having some computer problems. I'm running Windows XP. Every so often my computer will freeze and lock up while online. I need to manually shut down to get the computer to do anything. Also almost like clock work, I will have what sounds like commercials playing without warning online and off (the sound without the pictures). I have tried to do a system restore to a time when the computer was working fine but now system restore will not do anything. What can I do to get my computer back to normal? I haven't downloaded anything dangerous but I am not the only person using the computer. All my scans have shown no infections. I don't want to reformat my drives, is there something else I can do?