Am I doing something wrong? I see many people here running 6 X RX480 on the BTC PRO MB and Win7 and Win10, I have the same setup using powered risers and with 6 cards can't even get to post. Most I got working is 4 cards. I have the MB running 295 X2 GPU, 3 of them for a total of 6 GPU's fine, but no dice with the 480's. Am I missing something?
How many GPU's do you have on device manager and what are their status?
I can only boot into windows with 4 CPUs plugged into MB, I see all 4. But when adding a 5th or 6th on the MB, fails to post. does not even get to load windows. No post. I tried win10, win7 and even EthOS which is linux based. Same symptoms, will not post with more then 4 GPUs. I even tried the H97 Anniversary MB, same thing, best I can get is 4 cards.