Few days ago i buy nvidia geforce GTX 295. I put it in my P5N-E SLI motherboard and i was seeing that cable is not connected. Green light is on, fan is spinning, NO BLUE LIGHT. I can hear windows welcome sound. My psu is 800w full atx. I am using D-SUB to DVI cable adapter. Also tried HDMI cable. Tried to pit in another slot. Still no video. Any help?