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HD Radeon 7970 not working?

Last response: in Graphics & Displays
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January 29, 2013 12:28:27 PM

Hello,

I just bought a HD Radeon 7970 from Novatech. I've plugged it in fine and everything yet all I get is a black screen. The fans spin, so power is going to it. I checked that the graphics card is compatible with my motherboard (a gigabyte 78lmt-usb3) and everything checks out. I plugged a monitor in through the motherboard and checked the device manager and it doesn't seem to be there, even after installing the drivers. Anyone know what else I can try?

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January 29, 2013 1:22:04 PM

"I plugged a monitor in through the motherboard and checked the device manager and it doesn't seem to be there, even after installing the drivers."

Since the on-board graphics adapter is still usable with the Radeon card installed, that suggests the on-board adapter hasn't been disabled in the BIOS settings. It's usually disabled automatically when an alternative graphics card is detected in one of the PCI/PCI-Express slots, but on your PC it may have to be disabled manually.

Plug the monitor into the Radeon card, restart and go into BIOS Setup
Disable on-board video, then be sure to "Save to CMOS and Exit (F10).
The Radeon card should then work.
January 29, 2013 2:18:53 PM

Just tried it out, still nothing is coming up on screen. With the previous graphics card, the display came up fine. When I plug in to the new one, I don't get anything from the get-go - no load-up screen, BIOS settings etc.
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January 30, 2013 3:32:07 PM

Found the problem.

My PSU is just the tiniest bit off the spec required to power the 7970.
February 14, 2013 2:21:53 PM

What PSU did you have? I'm having the exact same problem. My PSU is a 750W cooler master.
February 19, 2013 11:42:41 PM

My problem was a simple bios setting.
!