K. There is no 4 prong connections or anything. I just power it off, install the graphics card into the pci slot. When I try to boot it up to install the drivers etc, I get nothing. Just a black screen. Ive tried to install the drivers first without the card in, but it wont let me, as there is no card... I might add, that I have tried both connections to connect my display, both to the ati card, and the onboard display. Neither will bring up a display.