Hello to all

I have a strange problem,

My configuration
Msi Z170A Gaming Pro Carbon with Bios Mod
I5 6600k
Corsair Dominator Platinum 16gb 3000
7 Sapphire RX 480 Nitro + model 01
PSU Corsair 1200W
Risers 1x to 16x with 6 pin connector
HD Seagate 320 2.5 "


Before formatting:
Drivers 16.9.1 and 16.9.2
Claymore 8.1 and 9.1

Problem with 6 rx 480: GPU3 at 0,000 mh / s and opencl error
I tried with original bios, V3 mod, change cards, change riser, always remains GPU3 (GPU 4 in Afterburner) real slot "6" starting from the processor

With 7 GPU does not work windows with blue page

After formatting
Drivers 17.4.3
Claymore 8.1 and 9.1

installed windows 7 gpu with no active mod

Problem with 7 rx 480: GPU6 at 0,000 Mh / s and opencl error
I tried with original bios, V3 mod, change cards, change riser, always remains GPU6 (GPU 4 in Afterburner) real slot "7" starting from the processor

But now if I remove the GPU 7 it works well with 6

(Another problem with mod I never managed to get to 31, I stop to 29.8, then freezes all)

Do you have an idea or a solution to this?