I just got a gtx 960, and when i start the pc the fans start to spin for about 15 seconds then slowly go off. i notice that the cpu fan as well is just a little weak when it goes on. I'm not sure if the card its self isnt getting enough power or what. I tryed my brothers gtx 750 ti and both fans were spinning great. the gtx 960 is new. Not sure if its an issue with the psu or not, i just built the pc please help! haha