Hello i just got a new pc with a gforce 580 from someone and im having problem with VR temperature. My computer froze 3 time in 4 day. I can see my 12 volt is going as low as 10.0 sometime and VR temp goes up to 75C sometime when i play games. I got 4 ventilator but only 2 are running, im wondering what i could do to solve this problem. Thank you very much for the help.