Asus HD 7770 2GB locks pc after 20 min of gaming

[stevek95]

after 20 min of gameplay it crashes, the screen has a white background with lines going through it. and i have to use the tower buttons to reset the pc . this only happens when the graphics card is on load. i can play minecraft for hours with no problems, but with skyrim it crashes once 55 degrees is hit
the graphics card crashes at 55-57 degrees (using MSI afterburner) any suggestions? have a 600w power supply
is there any suggested software to run on this pc that could check the graphics card or other components for flaws?

 

[TechyInAZ]

Update everything, update graphics driver, get updates from windows, and update the BIOS.

 

[stevek95]

Everything is up to date.
I have installed a nvidia 8800gt it runs flawlessly for hours at high temps.
But this was just to check if it was the system or the card

 

[Fidgetmaster]

what power supply are you using?

 

[stevek95]

It's a corsair CX600m
It was bought recently,
Is there anyway of testing the power supply for faults?

 

[stevek95]

could re applien thermal compound fix this problem?