So this is a new computer that I've just finished up. I haven't had any other problems then not getting video from my graphics card. Onboard works fine and I've installed Windows 7 64 Bit and tried to install drivers for my card, still nothing. It is detected in device manager, I've reseated it several times to make sure it's correct and have both 6 pins tightly plugged in. The fans spin and there are LED indicators for the 6 pins which are lit.
Go into the CMOS and change the primary display from on-board to PCI-Express (PEG) in the advanced options. That should fix it.
I think I just did something horribly wrong. I saw something that was 'Onboard Video' and I disabled it, but that didn't fix it so now I can't get to BIOS because the onboard video doesn't work.. Lol. Do I need to reset the CMOS battery or something?
Also, I forgot to add that I plugged in a different graphics from my old computer (GTX 8800GT?) something like that and it worked fine.
Edit: Okay. Manage to set BIOS back to default by plugging in old graphics card. I have something that's called "Init Display First" and it's set for PICe 1 Slot, which is where the card is.
You sure your first graphic card is properly connected. You might want to plug your old graphic card and then go to init Display First change it to onboard graphics. Then restart you computer put your new graphic card (remember to uninstall previous graphic card drivers) install its drivers. Post the results back here.