This is the first discrete GPU I've had on this computer so my problem won't be old drivers lingering. Basically, I've fitted my new 6850 in the PCIx16 slot of my mobo, fitted both power connectors and ensured the card is in place. (It runs when the PC is on, so I know all is connected ok - noisy too...)
When I tried installing drivers, it did not give me the option to install Catalyst Control Center, which confused me. I then worried that it might be because my GPU was not being detected - turns out I was right.
It's not listed in the device manager, nor anywhere else. There is no evidence anywhere of my computer recognizing the card (apart from the sound of the fans)
Can anyone tell me what's going on? There's not a great deal more I can say to be honest, so this is more of a troubleshooter thread...
Oh, and my PSU is an XFX 850W so that's not the problem.
Are you using an on-board GPU and your discreet GPU at the same time? My recommendation would be to verify your monitor is connected to your add on card, and not an on board. If you get anything on your display then the card is working properly. If you get an error message you may need to modify your BIOS settings to disable the on-board video. After you log into windows, download the newest catalyst drivers from AMD's website here.
If you are using an on-board video card and you don't have connections for your discreet video card, you will have problems. Plug your xbox/ps3 into your wall, then turn them on without connecting them to a TV. They will sit there and blink the power light at you, but never turn on.
The same thing happens to them, that is happening to your video card. It knows when it has a monitor attached, and until it does it has no reason to turn itself on.
Step 1, connect a monitor. Try that then get back to us.