Hello,
i have a Asrock Z77 EXTREME 9 and i can only get 4 gpu's to work.
Im using old ribbon powered risers, and windows 10 64 bit, 18.2.2 AMD drivers. RX550 gpu's.
I tried different combinations, but so far i can only get the board to recognize GPU's in slots 1, 4,5,6 ( counting from top to down, top being closest to CPU.
When i add my 5th gpu in either of the remaining slots, its still not recognized in Windows. I have tried different combinations.
I even found an older topic on this forum where a bittalk member was asking the same, and he got it to work, he said he had to enable GEN2 PCIE in the bios,wich i did too.
This is the topic:
https://bitcointalk.org/index.php?topic=2133125.0Hope someone has the answer for how to fix this, i will give him/her 5 merit.