Consider breaking down your list so it's more readable. Paragraphs with numbers on them go a long way and you might solicit more help that way.
For your chipset, AMD shows there is a newer chipset driver available on their website, dated April 19. May resolve your 960 EVO issues.
https://support.amd.com/en-us/download/chipset?os=Windows%2010%20-%2064It's possible your board SATA ports are wired incorrectly, but I've never seen that before. Consider the following:
- As a test, unplug your DVD and plug the 850 EVO data drive into SATA6G_1 instead. Leave the DVD drive disconnected and reboot.
- As a test, plug the DVD drive into a few of the other ports
I am assuming that W10 is installed on your 960 EVO ?
For your SLI issue, I am fishing here and could be wrong, but this is the way I read your problem.... your CPU I think gives you 20 lanes to use (plus 4 for chipset communication). So in your case 16 for your 8x8 GPU config, plus another 4 lanes for your 960 EVO NVMe. So in theory you shouldn't have any issues recognizing your 960 if you have no other PCIe slots filled, and if you have it selected in BIOS (if you have the option) as NVMe and not SATA. The only suggestion I have here is ensure you have the latest firmware update for your drive, from Samsung.
Make sure your SATA driver is latest. Sounds like it might already be.
Your mobo users manual suggests you should have 1000W or greater power supply for 2 high end GPU's. Personally I think that's overkill for your system, but it's just a sidebar note if you didn't read it.
Davemon50