Display driver has stopped responding and has repaired itself...

Your system indicates a 64 bit one,yet you appear to have run the 32 bit DXDIAG.After running the 64 bit one,could you go through the steps,in sequence, found in the HELP section,[button next to the 64 bit selector]

Assuming the HELP section did not provide any solutions then the next step is to find out why the overheating.Remove the case cover and carefully clean all fan blades,intake and exhaust openings NOTE switch off at wall point first.If you don't have access to compressed air,a bicycle pump can be used,avoid touching components.Remove the graphic card and clean it,use a clean pencil eraser to clean all contact points.If the card has a coolng fan,the check the intake and exhaust louvres for dust build-up and also the fan itself.Make sure the fan can spin freely.Carefully inspect the card for ANY signs of discolouration and/or distortion,if any found then bye bye card.

Could be possible hardware failure.

Benchmark (with certified software)(MSI Afterburner, KOMBUSTOR) it and see if it will crash then. if it doesn't, it's just bad game compatibility. if it does, consider contacting AMD and using your manuf warranty