New card, Windows recoginzed it, but isn't listed in Device Manager

[Spustatu]

I just installed a new HD 6670 into my computer, but the computer won't use it. Instead, it's defaulting to the onboard graphics. When I turned the computer on for the first time with the new card, Windows detected the new device and installed drivers. I installed drivers off of the CD that came with it anyway. After restarting, I could no display from the new card. I switched the monitor input to the onboard and checked Device Manager and the only video adapter shown was the onboard graphics. I downloaded the latest drivers from AMD, installed, and restarted. Same thing. I restarted and went into the BIOS and set it to pull graphics from the PCI slot first. Still nothing. I unplugged the VGA from the onboard and restarted with nothing but an HDMI going from the card to the monitor and still no display. The BIOS version is up to date. I don't really understand why Windows would recognize a new device, but then not recognize it at the same time.

 

[Faladu]

Disable the on-board in BIOS, you don't use both, once you add a PCIe card.

 

[Spustatu]

There doesn't appear to be a way to disable it in the BIOS. The two options I have are "Always Enable" and "Enable only when no PEG is detected" or something very close to that. No disable.

 

[Faladu]

OK, so you took the latter with Enable Only and still giving you grief? I would call the motherboard's tech support line, you didn't fill in your specs... so nothing else to go by.

Check the card and make sure it's fully in the slot is only thing left, while the power cord is not connected...

 

[Spustatu]

That's right. We selected the Enable Only option and it's still not working. I'm pretty sure it's firmly seated all the way into the board. The motherboard is a Gigabyte GA-M68MT-S2. I had this same problem with a card that I put into it a year ago, but it got worked out somehow. I don't even know how it happened.