HD Radeon 7970 not working?

[mike512]

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?

 

[phil22]

"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.

 

[mike512]

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.

 

[mike512]

Found the problem.

My PSU is just the tiniest bit off the spec required to power the 7970.

 

[Esmodn]

What PSU did you have? I'm having the exact same problem. My PSU is a 750W cooler master.

 

[chuckcrowleysteak]

I hav the same problem... grrr...

 

[Esmodn]

My problem was a simple bios setting.