My temperatures are stable so I suppose is not overheating, here are my specs
Phenom II 965 3.4 Ghz
AMD 6870 1 Gb
Corsair 8gb Vengance
Windows 8 64 Pro
CPU is at 45c MAX
GPU is at 70c MAX
My PSU is Thermaltake TR2 600W
I already clicked on Repair Install says its all good
Thanks for your help