I just recently build a new build and I've installed the drivers for my sapphire radeon hd 6870.
However, when I try to start the computer with the monitor plugged into the card, I get nothing. The GPU fan is spinning and I have it plugged into a 600w PSU. The computer works fine without the GPU in, but it won't start with it. I have the bios set to detect a GPU before onboard graphics so I don't know what the problem is.
The computer works fine without the graphics card plugged in. It wont display anything if i try to turn it on with the graphics card in it. I installed the drivers from the GPU's CD and even tried the ones on the AMD website. I don't know what I am doing wrong.