Gigabyte radeon R9 380X not recognized

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Dec 20, 2015
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So, I upgraded my PC. I replaced the motherboard, CPU and GPU. The GPU however, does not get recognized.
Specs: Mobo: H97 PC Mate (MS-7850)
CPU: Intel Core i3 4360
GPU: Gigabyte R9 380X (just shows standard-VGA graphical adapter currently)
RAM: 2x 4 GB
PSU: 500W (which is enough according to their site)

The GPU is inserted properly, lights up, fans spin, HDMI-cable is inserted through the GPU.

So far I've tried:
- forcing through BIOS to not use motherboard graphics card: resulted in a black screen
- downloading drivers seperately (no progress)
- reseating the graphics card in the pci-e slot, no results
- using my old GPU (Radeon HD 7700 series), which works just fine

I have no idea what might be wrong or how to solve this. The only two issues I can come up with are:
- GPU arrived non functional
- PSU to GPU is not inserted correctly. My PSU didn't come with an 8-slot pci-e, instead came with two 6-slot pci-e cables. I bought a converter (2 molex to 8-slot pci-e) to solve this problem. This however doesn't seem likely because after using the 8-slot converter, I got a screen instead of a black screen.

Any ideas/suggestions would be greatly appreciated.
 
Solution
This is a common problem I've solved for about 3 different people on 3 different posts this week. As i've stated many times about AMD cards, you just can't use HDMI first. You have to plug the card to the monitor via VGA or DVI and run the card on default windows GPU drivers. Then install the card drivers via disc only because the drivers offered by AMD's website don't work some reason. Then when the drivers are completely installed you can finally connect the card by HDMI. I suspect it's because AMD cards always have to install the HDMI audio driver as part of the cards necessary drivers. Let me know if this worked, it probably will.

CDDogg

Distinguished
Aug 20, 2015
257
3
18,815
This is a common problem I've solved for about 3 different people on 3 different posts this week. As i've stated many times about AMD cards, you just can't use HDMI first. You have to plug the card to the monitor via VGA or DVI and run the card on default windows GPU drivers. Then install the card drivers via disc only because the drivers offered by AMD's website don't work some reason. Then when the drivers are completely installed you can finally connect the card by HDMI. I suspect it's because AMD cards always have to install the HDMI audio driver as part of the cards necessary drivers. Let me know if this worked, it probably will.
 
Solution