My laptop vaio vpcf115fm, gt330m video card, keeps shutting down whenever it uses the gpu. When a run a cpu stress test, its fine. But when i start a gpu stress test, as soon as i hit start, it shuts down. This also happens in watching videos in youtube. In video games, it can launch a menu. But when its done loading and starts a game up, it shuts down. I tried installing older versions of nvidia drivers and different versions of windows but no avail.. the laptop is currently in windows 7 and installed all the drivers in the sony website. I also tried cleaning the laptop and installing new thermal paste.. still no luck. Anyone else have the same problem and got it fixed or suggestions on what to do to troubleshoot this laptop?