I'm currently working on setting up a mining rig and I'm running into some problems with getting windows to detect all my gpus. I'm using a Pentium g3258 with a gigabyte h170 d3hp MB and the gpus im trying to get to work are gtx 980, 950, 1060, and 770 and a handful of usb 3.0 risers. The problem I'm having is that when I boot into windows only two gpus are being detected in afterburner and device manager also the only gpus to ever be detected are the gpus in the top two pci slots.