r6870 hawk display driver error

Ok so i rma'ed my r6870 hawk and the new one they sent keeps giving me the (display driver stopped responding and has recovered) error every time a start a game and if i try browsing the web or anything on the desktop it give me the error every
2 to 5 mins my computer freezes then in 3 to 6 sec the screen blinks and the error comes up any ideas.

i have tried fresh install of windows 7
newest motherboard bios
older display drivers
reseating the card 3 or so times
graphics card bios update they where the newest available
installed the newest chipset drivers
and many other things i can't remember

i have no other computer to test with
but my other card worked for a while and played threw battlefield 3 single player 6 to 7 hours
and lots of internet browsing with out ever having the display driver error

system secs
gigabyte MA785GMT-UD2H
Athlon II X3 440
western digital black 500gb sata
G.SKILL 2GB 2 x 1GB DDR3 1600
corsair cx400
dvd cd burner combo ide
front case fan 80mm
rear case fan 120mm
random gateway case from really old computer.




Don't...
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