I recently had my computer built from CyberPowerPC. After a few minutes into a game (for less demanding games) it crashes my computer and it freezes and becomes unresponsive, forcing me to hard shut down. I tried reseating the GPU (which is an AMD Radeon HD 7970) and the RAM. I also tried to play games with one stick of RAM. In addition, I updated all of the drivers and it still crashes. Please try to help and Happy Holidays!