1. The BIOS is out of date.
2. The owner is leaning or relying on Windows to get the motherboard drivers. This issue has been in Windows since before 1995. NOTHING has changed in this area (me bashing the industry here.)
I work both these before I get on the motherboard maker's forum to report it in.
I have 2 systems with 1 gpu each (GTX 1070 and rx 580). They both work in system 1 but only the gtx 1070 works in the second system. There are no drivers installed on the 2nd because it has a fresh install of windows. The first only has nvidia drivers but the amd card still works. The motherboard is also new in sys 2.
Any help would be appreciated. Thanks
16 ddr4 2666 ram
Msi Z170A pc mate mobo
250gb ssd 1tb hard drive
Rx 580 8gb (Red Devil)
4gb ddr4 2133 ram
Msi B150M pro-D mobo