Hi. My gpu fans spin for a while and then stops, every other fan like psu and cpu are working. Using only 1 ram slot which is working fine. When i get display from onboard gpu it shows bios screen and everything. But when i take display from gpu (gtx 1070 asus expedition) it doesnt display anything just blank screen on monitor. It has 6+2 pin power connector and shows a white led when plugged into gpu. My psu is vs550 whivh seems enough for my system. I7 2600 , mobo : intel dq67sw.