I was wondering if anybody could help me figure out what could be wrong with my PC, its a brand new, self-build so all the parts are new.
Windows Vista 64-bit
Intel Pentium i7 920 2.66Ghz
Motherboard: Gigabyte EX58-UDR3
6GB DDR3 RAM
XFX ATI Radeon HD 4850 XXX Edition 512mb GDDR3
The PC boots fine and sits idle without freezing however when I open a game, namely world of warcraft, it lets me play for a few moments then freezes completely, can still move the mouse pointer about but nothing else. It has also frozen up when I have about half-a-dozen different applications open at once. I've updated all the drivers. I've stress tested the cpu to 100% with no ill effects and done the same with the graphics card and nothing has gone wrong.
Any ideas or solutions would be greatly appreciated.
Note: wasn't entirely sure this was the right place to post this so feel free to move it if need be.