Email Sent,
I have experienced a LOT of frustrations with this....... Thought It was video card, Thought it was Windows 10, I tried all Nvidia drivers, went back to a 760GTX, even rolled back to Windows 8.1 same issue, Finally I mounted cards directly into M/B, and both Cards are working Fine! So I determined a Defective Riser card......Probably because it was folded 180 degrees when I opened the box for the first Time.