I've been having trouble with my laptop for over a week now. It's going very slow, it keeps hanging up and freezing. I've been running virus scans and spyware scans, and just when I think I'm making headway, suddenly when I attempt to log on to Windows XP, I see there is a password box next to my name when I never set any password. When I try to log on, I see an error message that says that I can't log on because my domain is not available. One of the solutions I've seen to this problem is to rename the computer and reboot, but I don't know how to rename my computer. Any help would be appreciated. Thanks.