Hy i have an INTEL Core 2 Quad Q9300, 2500 Mhz (7.5x333) ,4 Gb DDR2,Nvidia 9600 GS 768 Mb ,1 Tb. computer and i would like to know why does it freeze playing thoose "BIG" games like GTA 4,Wanted,Tom Clancy Vegas 2,Kane and Lynch,Turning point Fall of Liberty.All thoose games starts, and i can play them for about 30 minutes, all of them,but after 30 minutes my computer freezes.Why is this?It is not enough good?Maybe he overheats (overclocking if i am sure??

).What should i do with it?I mention that after the freeze and the fast restart of the computer i start the games again ang id freezes faster, in 2-3 minutes.What should i do?
i provide some more data about the pc here, if you miss anything from the description just ask and i tell you.
Motherboard name Packard Bell MCP73
Motherboard Chipset nVIDIA nForce 630i
Please help me thank you.
EDIT: Combined topics
This post has been edited by garmanma: 04 April 2009 - 03:24 PM