Hi all,
I'm having issues with my H110 Pro BTC+. It refuses to boot (don't even get BIOS) with more than 9 GPUs installed, on the 10th i get the issue, 9 works fine. I've followed the miners guide and ensured both molex plugs and the Sata connector (so 3 in total) are connected on the motherboard and are also using 3 separate cables back to the master PSU. Can anyone help? OS doesnt matter since it doesnt get that far.
Setup:
H110 pro BTC+
Intel G3930 CPU
4GB Ram
500GB Sata HDD
ATI Rx Vega 64 GPUs
3 x Corsair HX 1200 PSUs (1200 Watts each).
Is there perhaps some sort of undocumented issue with the board not supporting these cards? They require two 8pin PCI-E power connectors each, my power draw should be fine though, I have one PSU dedicated to the mother board and the other two PSUs for the GFX cards. Apart from that anyone got any bright ideas?

Hi,
I am facing the exact problem like you!!!
With 9x vegas it´s running nice, but when I connect 10x nothing happend. I am not even able to boot inside bios. Monitor is off and thats all...
I am was contacting asrock support few times, they are told me lots of sh..s, but at the end, they are sent me a new bios for mobo. Unfortunatelly I am was unable to try it because the rig is in remote area...
If you want to try, I can send it to you.