Computer Freezes when Playing Games

[twister1227]

System setup:

Mobo: Asus M4A87TD EVO AMD 870
CPU: AMD Phenom II X6 1100T
Ram: 8GB (4GBx2) DDR3/1600MHz Dual Channel Memory Module (Corsair Vengeance)
Video: Dual AMD Radeon HD 6870 1GB GDDR5 16X PCIe Video Card via CrossFire
HD: 1TB SATA-III 6.0Gb/s 32MB Cache 7200RPM HDD (1TB x 2 (2 TB Capacity) Raid 0 Extreme Performance)

Windows 7 Professional

I got this computer brand new from CyberPower on the 20th. Whenever I start a game (Crysis 2, Dragon Age: Origins, Starcraft 2), I make it maybe 5-10 minutes before it freezes. Rebooting the system fixes it but it happens again after a few hours of playing. It can't be a heating problem because it freezes minutes after I start playing. All drivers are up to date.

Please help!

 

[eightdrunkengods]

What speed is your RAM running at? (CPUZ can tell you) If it is 1600, turn it down to 1333 and see if this fixes your instability.

Do you have Punkbuster installed (it may have been installed automatically by a game.) ? If so, search your HDD for "rtcore" and report back if the search finds anything. (like rtcore.sys or rtcore.cfg)

 

[twister1227]

Turned it down to 1333 and I'm still having the same problems.

Any more suggestions?