I have tried a few games out on my new comp but not long into playing a few of them they just shut my computer down and crash. The game becomes extremely laggy and then just shuts off after a few minutes of playing time. Games that crash my comp: Medal of Honor Airborne, Mafia II so far. Empire total war works which is wierd it seems that high action FPS games seem to choke up and kill the comp. I have a intel Core 2 Quad CPU @ 2.66 Ghz Windows home premium 64 bit 8.00 Gig Ram ATI Radeon HD 4600 I really dont know what to do I would really like to play these games. Thanks for any insight. Edit: Well i can add Call of duty Black ops to that list of games that crash my comp. Call of duty actually runs great on my system but the in the second mission the computer reboots. I have re-installed the catalyst drivers and the directx, also the physx as well. Im stumped i just got this comp back from repairs.