GPU overheats even after changed past//fan

[DCganer]

Hy, I have a HD 5670, worked fine until I accidentaly gave it a bump while cleaning the PC. After that when I turn on the PC after ~10m the screen goes blank. I put another GPU for testing and it works fine.
I tried changing the thermal paste and fan, but the problem still occurs, using HWmonitor the core temp is only 30ºC but after turning off the PC, when I touch the plastic of the GPU it burns to the touch. Any advice?

 

[boogalooelectric]

Maybe consider getting one of these and mount it to blow directly on your vid card:

http://www.antec.com/product.php?id=80&pid=15

Of course if you don't like blue led's that could be an irritant, but this is a good add in fan and moves quite a bit of air.

Otherwise I would consider liquid cooling, which can be a pain and smelly. But will keep it nice and frosty.

 

[J_E_D_70]

The screen goes black regardless of what you are doing (idle, web, game)?

Try taking the side panel off and blowing a floor fan directly on it and see if it acts differently. If so, you could try the case fan. But, I'm thinking it's about new card time.

I did have luck in the past with baking a dying GPU to limp it along (three bakings bought me a little over a year - it died right after the warranty was up). You can google that one on your own and I'm not recommending that route, just making you aware of it.