Hi.
Have a run through the 'Common Game Issues' thread (Link in my signature), if you haven't already.
If nothing there helps at all, try using version 84.21 of the Nvidia Drivers. You will find a link with information and a download link in my signature. So far the 84.21 drivers have proven to be most stable, the thread will tell you more.
If all else fails, please download Everest (Also in my signature), then go to:
Computer -> Sensor. Take a screenshot or simply post back with the temperatures and voltages Everest report.
Have a run through the 'Common Game Issues' thread (Link in my signature), if you haven't already.
If nothing there helps at all, try using version 84.21 of the Nvidia Drivers. You will find a link with information and a download link in my signature. So far the 84.21 drivers have proven to be most stable, the thread will tell you more.
If all else fails, please download Everest (Also in my signature), then go to:
Computer -> Sensor. Take a screenshot or simply post back with the temperatures and voltages Everest report.