Ok I just installed a game called Flatout 2. I had an issue yesterday when my dad installed alot of stuff to help get rid of a virus but it didnt help and the pc wouldnt boot (kept restarting on log in account window). Now I got rid of all his crap and did alot of scans and cleaned it up and safemode and now it works fine. I go to run this game and the computer just restarts. I scanned for viruses and such again and nothing. I ran dxdiag and everything is fine. What else can I check?