I have a Asrock z270pro4 and 5 x Asus strix rx580 8gb. I am having issues getting the GPU's to mine when on riser cables. I have tried a cable that works on another machine to rule out faulty cables. All GPU,s work when mounted on the motherboards pcie slots. with one of the cables, the GPU shows in device manager but when I mine the machine hangs, I checked using GPU-Z that the GPU on riser cable is not getting more than 40 watt. I have double checked all connections and also reset my CMOS multiple times. Each times I change the riser cable or the slot, I reset the CMOS. I have also tried setting the PCIe speed to gen1 and gen2 but no go. Please help me as I have $3K worth of gear sitting, doing nothing.
Thank you so much