every time i try to play a heavier game on my computer it closes itself , no blue screen or anything it just closes at first i thought maybe the dust may be at fault but after cleaning it up still same problem , i thought that overheating might had something to do with it but it seem overheating is not the problem either, finnaly i did a format and updated to windows 8 but the problem seems to be the same, i dont know what to do to get my computer to work again and i need your help
btw its an integrated amd a8800 cpu with an amd hd8570 gpu.