This is the first labor intensive game I have played on my rig and after about fifteen minutes, my system locks up and I have to restart. Soyo Hardware Monitor says 47 degrees celcius which doesn't seem that bad. After one of my restarts, I went into bios and my on die temp was 58 degrees celcius. My chip is overclocked but not my vid card, which I can o'c. I can add one more rear fan, which I plan to do but in this situation, what is typically failing?