Sapphire 7850 Freezing PC?

I'm having an issue, where about an hour into playing any game (time varies) my entire computer "freezes" the mouse is still responsive, audio loops (except skype), and it lasts anywhere from 20 seconds to 1 minute. I really would rather not send back my card, but if I have to I will. Can anyone please help me try to solve this issue? I have all windows 7 updates, I'm using the current CCC beta, and my specs are as follows:

Antec Three Hundred Illusion Black Steel ATX Mid Tower Computer Case
CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM
COOLER MASTER Silent Pro M2 RS620-SPM2E3-US 620W
SAPPHIRE 100355L Radeon HD 7850 2GB
Western Digital WD Black WD1002FAEX 1TB 7200 RPM SATA
Acer P6 P246HLAbd Black 24" 5ms Widescreen LED Monitor
ASUS M5A97 R2.0 AM3+ AMD 970 SATA 6Gb/s USB 3.0
LITE-ON Black Internal 12X Blu-ray Combo
COOLER MASTER Hyper 212 Plus RR-B10-212P-G1 "Heatpipe Direct Contact" Long Life Sleeve 120mm CPU Cooler
Windows 7 Ultimate

PLEASE! I am begging for some help.
4 answers Last reply
More about sapphire 7850 freezing
  1. Did you overclock anything (CPU, RAM, GPU)?
  2. No overclocking, all stock.
  3. All drivers updated to the latest (motherboard, chipset, network, etc)?

    If yes, then there's probably something wrong with the card. Or motherboard and memory. Sometimes could be a psu issue as well. If possible, try installing the card in another PC (one that can handle it) and see if the issue persist or not.
  4. Nothing I can test it on
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