My computer was working just fine until a couple days ago. I turned it on and windows would not respond. I tried everything to fix it from starting in safe mode to a virus scan, and now I can use my computer for about 10 minutes before windows stops responding. Task manager will not work and my computer does not restart, shut down, or even log off when I try to. I have to hold down the power button, which can't be good for my computer. Does anyone have any idea on how to get this to fix this?