I came up with a workaround now, but it is ugly and well if AMD does not fix this, then they should remove the RAID functionality from their chipset because it is BAD.
AMD MUST DEFINITELY FIX THIS ISSUE!!!
I removed all the drives then installed windows 7 on a different disk. Installed RAID drivers and RaidXpert software. Then connected all the drives. The array logical drive showed as 'offline' I have activated it and then started rebuild!. Now I know I have to keep a windows 7 installation somewhere for future problems
I thought I would support AMD by building an AMD system, but I feel bad about that decision now. I surely hope AMD would solve this driver problem otherwise it makes no sense to use AMD hardware anymore if basic functionality does not work!
There are already several threads here where people are complaining about RAID with SSDs etc. not functioning and also not being able to find windows 10 drivers and driver installer not installing proper software. Here is definitely a real problem to fix!
What Raid drivers are you using in Windows 10? I had the same issue with my Raid 5 array missing after upgrading to Windows 10. The 16.7.3 drivers don't seem to work. However, I manually selected the driver through AMD site by going to Chipsets > AMD 6-Series Chipsets > All 6-Series Chipsets > Windows 7 64 Bit. I was then presented with amd-catalyst-15.7.1-sb-sata-ahci-win10-win8.1-win7.exe.
After installing that, my raid 5 array showed up and works fine now but I have not tried a rebuild. I'm running a Gigabyte GA-790FXTA-UD5 board.
I don't remember the driver version right now. I will retire that RAID array ASAP after I upgrade it to a Ryzen processor system. No more RAID5 for me, it was also somewhat slow under Windows 10. I am not using the machine that often...
My problem was that my raid array got broken everytime I plugged in something to front USB port. I now keep a windows 7 hard drive sitting nearby just in case and removed the connector to front USB port I have an MSI motherboard, 890FXA-GD80 or something. I can't remember now the exact model.