I'm baffled by this as I've tried everything from risers to different USBs, location on boards, different mining rigs with 8 GPU's but for some reason this GTX1070 of mine wont show up at all! I've tried direct connection on board and it still doesnt show up.

It only works when plugged in alone in a system and mines along just fine.

What could be the issue with this card? They usually work or don't work at all but this one is driving me nuts