I have sort of an odd problem when trying to use both my R9 390x and R9 390. Both cards work fine independently, but when I install them in the recommended PCIE slots for CrossFire (slot 2 and 5), I get no POST, no video, nothing.
A single card works fine in slot 2 and a single card works fine in slot 5, but using both causes the problem.
I'm getting a debug error code on my moboard's LED of 96, which corresponds to a PCI resource error.
Here are my specs:
CPU: Intel Core I7-6700k
MOBO: MSI Z170A Gaming M5
RAM: G.Skill Ripjaws V Series 16GB (2x8GB) DDR 4 3200
GPUs: MSI R9 390 and 390X Gaming 8G
SSD: Samsung 850 Evo 1TB
PSU: Corsair AX860
OS: Windows 10 Pro 64-bit
I've been speaking with MSI as well, but they have not recommended or discovered any solution. The 850 Evo is in SATA, not M.2. The only other PCIE card I am using is a Rosewill wireless NIC in slot one. I removed it and I am still getting the PCI resource error with both R9s.
Any ideas? The PCIE options on my motherboard seem limited, only thing I can change is PCI latency and to enable above 4G decoding, which I thought might have been the issues with 16GB of video ram combined, but that didn't help either.
Message was edited by: Matt B We have updated the title of this discussion with relevant details to better describe your issue.