Hey,

I have a problem with my PC. When i start it up my graphic card (i'll call it "G" for now on in this post) works odd. It's ventilator runs faster then slows down, then runs faster again. My monitor is not turning on. I tested my G in friends computer and it's running normally.
So now i started my PC with integrated G and it's working normally.
So i dont understand what's the problem. What piece of hardware is not working normally?
I have BFG GF9800gtx+ oc. It needs 2 additional PSU connectors to work properly.

Now as i said. My pc is working normally if i remove my G but my G is working normally on pc of my friend.
Could the problem be my PSU, or motherboard(it's PCIE slot)? Please help, i'm getting crazy....