Computer 'Hangs' and Freezes

dave675

Honorable
Sep 15, 2013
4
0
10,510
My computer freezes up almost completely randomly. Sometimes it will recover after a few seconds but often I have to restart or hard power off. I can let it sit on my desktop forever and it never seems to freeze its only when I'm using it. Any youtube video seems to cause it and also playing Dungeon Defenders. However Saints Row 3, Fallout 3, and Tf2 all work fine.
Specs:
AMD FX-8350 4.0GHz 8-Core Processor
ASRock 990FX Extreme4 ATX AM3+ Motherboard
Kingston HyperX 8GB (2 x 4GB) DDR3-1600 Memory
Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
EVGA GeForce GTX 650 Ti Boost 2GB Video Card
TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter
Running Windows 8
Please Help Thanks!