Random restart when gaming, after new graphic card.

[ryoushu]

Hello,

My computer has been randomly restarting while gaming. Normally I could game 4-6 hours before a restart.
Now with games like Hand of fate the restart happens after 10-15 seconds.

I changed my old amd 6950 HD graphic card to a nvidia gtx 960.

I assume this has to do something with graphic drivers, i have not yet updated my bios. Any help would be appreciated.

 

[ryoushu]

First week of the card change everything worked fine. Used this test http://www.sevenforums.com/tutorials/100356-video-card-stress-test-furmark.html

cumputer reboot after 3 seconds.