I recently purchased a second hand Sapphire Vega 64.
I installed it, installed the drivers and then the screen go white the picture would reappear. I tried playing a game( FAR CRY 5) and immediately the screen would go white and then normal again.
2 days ago the GPU just went black and then the Fan was loud like it was on full blast.
I restarted the PC and then there was no Signal and the fan has stopped all together.
Only Radeon on the GPU lit up.
The GPU was working 100% when it was tested.
Asrock A320M HDV
AMD RYZEN 5 2600
2 X 4GB 2666mhz G.SKILL RIPJAWS
MUSHKIN 500GB PILOT-E NVME SSD
1 X 2TB WD BLACK HDD
1 X 1TB SAMSUNG HDD
SUPERFLOWER 550W 80+ SILVER MODULAR
It could be that your powersupply cant supply enough power to drive your Vega 64.
Its mostly recomended to use a 750 W PSU for Vega 64 though it uses about 295 W.
Also make sure to use two (2) separate cables from the power supply to the card, as it will pull quite a bit of current from the supply during 3D rendering.
Morning Guys, We tested the card in two different slots on another motherboard with a 750w PSU. Still no Signal and fan still not spinning, Also just the Radeon light that lit up. I wonder If I should open the GPU to see what is going on in there.
Since you installed the Vega in another computer with the exact same results is a strong indication the Vega is defective.
Since it is used, You need to see if it has the original vBIOS installed or it has been modified. It might be a GPU card that was modified to be used as a Mining GPU.
Possibly something shorted out on the card. You can try and physically see if there are any burnt marks or broken traces on the card. Since it is a Sapphire card you have no Warranty since the Warranty is only for the original owner.
Plus you need to verify if the Sapphire GPU card you have is not a fake. Possibly by opening a Sapphire Support ticket and give them your Vega Serial Number.
GPU-Z would have been a good program to find out the specs on your GPU card and to verify what vBIOS you have installed.