I currently have the following setup:
Asrock Z97 Gaming Extreme Mobo
6 x RX480 Nitros
1300W Gold Rated EVGA PSU
8 Gb RAM
Intel i3 CPU
Running Windows 7 Pro 64x
So i connected 6 GPUs using USB 3.0 Powered Risers, All 6 GPUs pick up in Device manager, but 2 of them have an exclamation mark over them, (The device has stopped working and was stopped by windows) the miner does not see all 6, only 4 of them, I have 5 of these rigs and all 5 of them are doing exactly the same thing.
using 1 SATA Cable per 2 risers, and each card running its own 8 Pin power from PSU
Any ideas? is this MOBO related, operating system or something else I'm missing? I'm using 16.7 Crimson Drivers.