Black and grey screens, general freezes every time on 7870

Every time I launch a game, I can play it for 10 minutes before my computer crashes into a grey screen with shaded lines, a black screen, or just doesn't work. My temperatures are actually below average, and so I shouldn't be getting any problems. But I do. My rig:
-AMD FX 8120
-Asus M5A78L-M/USB3
-8GB Corsair RAM @1600mhz (not sure exactly what the model is)
-750w PSU
-1TB Hitachi 7200rpm Hard Drive
- VTX3D Radeon HD 7870 black edition (Tahiti LE)
-CIT vantage case
Please help! :)
2 answers Last reply
More about black grey screens general freezes time 7870
  1. Please help me! D:
  2. What make/model of psu? What driver are you using? Did you remove the driver last time you updated or just install the new one over it?
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