Radeon RX Vega 64 Issues

[casey_souder]

Ryzen Build Specs
Ryzen 1800X
ASRock X370 Gaming -ITX/ac MB
G.SKILL TridentZ Series 32GB F4-3200C14D-32GTZSK (2x16GB)
Gigabyte RX Vega 64
Corsair TX850M PSU
MyDigitalSSD BPX 480GB NVMe SSD
Custom waterloop cooling for CPU and GPU
Windows 10 Home Build 16299.64 (Current, unsure of build before reinstall)

Intel Build Specs
i7 4790k
ASUS Z97A MB
Kingston HyperX Savage 32GB 1600MHz DDR3 (4x8GB)
XFX R9 390 8GB
Corsair HX650 PSU
Samsung 1TB 850 Evo SSD
Cooler Master Hyper 612 Ver.2 CPU cooler
Windows 10 Home Build 15063.726

Issue
I purchased a Vega 64 and EK waterblock at launch and added it to my liquid cooled Ryzen build. I could stress both GPU and CPU over night and temperatures would stay low. Last Monday I was playing Star Wars Battlefront 2 and I noticed that on two of the maps the ground texture was corrupting. Two days later I went to play I went to play and the my entire computer locked as the map loaded. I reboot and relaunch the game. Same thing happens again, but this time windows locks up during the reboot. After multiple reboots I get into safe mode and decide to uninstall the graphics drivers (using DDU). I am then able to boot into Windows normally. I download the latest drivers and go to reinstall them and the machine hangs during the install and on reboot it once again hangs during boot. I get into safe mode, clean the drivers, reboot and try to install an older driver version. Same issue. Repeat above plus clearing the MB BIOS. Still can not boot with my Vega 64 after installing the drivers. I decide to reinstall Windows using a freshly created bootable USB drive. Same results.

At this point I pull out the Vega and install my old R9 390 into my Ryzen system. The 390 works perfectly. I now reinstall the factory cooler onto the Vega, hoping I can RMA it. I install the Vega in my Intel build to make sure it still half works. It works perfect and I can install the drivers. i can even stress test it with Furmark and it has no issue. I put it back in my Ryzen system w/ stock cooler and I have the same issues as before.

I also checked if using two power cables vs one with the pigtail coming from the PSU made any difference. No difference in behavior.

Besides not working with my Vega 64, my Ryzen build seems rock solid.

Is my GPU bad, is this a Windows issues, or is this something else? I feel like I'm beating my head against the wall trying to figure this one out.

Thanks!

 

[casey_souder]

I was able to get the card to act up on my Intel build by trying a variety of benchmarks and stress tests. I also got my hands on another Vega 64 to test with, and it worked perfectly in my Ryzen build.

Looks like a bad card to me.