Hello I need help, I have an XPS 1530 running Vista Ultimate with SP2. Here's whats been going on, about a month ago I suspected a virus. Start-up was asking and is still ask for a chk disk that takes 20 mins to scan, ok that could be normal. But then my sidebar will not popup, my files on thdesktop will not align and proccessing has slowed to more then 50%. but here is the kicker if my computer is plug in and then goes to standby the whole system freeze, it was at a point whether plug-in or not when it went to standby and was reopened it would freeze now its only when it is plugged in. I have Norton Internet security 2013 which can't find anything, have run hijack this 3-4 times, combofix 3-4 times, run in safe combofix 3 times, but still the problem. Also if the it is on battery power and dies and I have to re start the chk disk always is activated. don't know what else to do, please help.