HIS Radeon HD 6850

HI guys. I am in some deep trouble and cant find any solution anywhere. I just bought an HIS HD 6850 which i deeply regret as HIS i think will be the worst company ever. THe moment i play any game the system completely freezes and it blinks then the game star ts to run it runs for like another 6 seconds and then complete freeze again. this process keeps going on and on no matter what game i run. please advise.
my system specs are

Intel Pentium G620
Asus P8H61-M LX (mother board)
4GB DDR 3
Cooler Master Extreme 600w PSU
HIS HD 6850

I tried to contact to HIS support center they replied after 2 days saying install windows 7 sp1 i even tried that and still no good and now i am not getting any further replies from their support center.
 
The easiest way to return your HIS 6850 to your supplier if it is still within 30 days exchange period. Get some other brands like Gigabyte, Asus and Sapphire. Good luck.
 
Back