I have the same motherboard.
Here is what you're gonna do:
- Install Windows 10 with Cryptocurrency Mining ENABLED + Windows 10 OS enabled on the BIOS.
- Before biosmodding the main GPU (video output), change the Windows from 10 to 7, even if you're using Windows 10, otherwise the GPU will not output video.
- Still on BIOS, activate multimonitor support even if you will not use onboard video. Look for that option... I don't remember where it is located.
If you're getting errors on the Device Manager, try using the AMD/ATI Pixel Clock Patcher (google it) and restart your computer.
Virtual Memory 16384 to 20000 is enough.
Done