FrostBite2 overheating PC

SirovBurekSLO

Honorable
Dec 7, 2013
3
0
10,510
Hi, I have this problem when playing BF3 (or any FB2 game) that is crashing my computer. I don't realy know whats wrong, but it started when i was cleaning my computer. When I went playing BF3, I played 20 minutes and then it crashed my computer. I tryed to apply the thermal paste but it was still crashing my game (themperature was 84, after applyed thermal paste 78).

My specs are:
CPU: Intel i7 870
GPU:AMD Radeon HD 6850 (stock clock)

P.S. Sorry for bad english. Still trying to master it :)
 

SirovBurekSLO

Honorable
Dec 7, 2013
3
0
10,510


I checked but it's still the same. Now I'm trying to change the case. Maybe a new powersupply...