It's actually more complex then what the title says. The computer freezes after about 5 minutes into most games but after restart i can play the same game without any crashes or freezing. The way it freezes and the screens turns into funny colours points towards the graphics card overheating, but then why wouldn't it crash after the restart? I formatted the disk and installed newest drivers for my invidia card but it keeps doing the same thing, so im guessing it s not a software issue. I also tried cleaning the video card from dust, which doesn t really mean i cleaned it properly. It s hard to get inside the casing.