got a odd problem... installed my second rig today (one gpu directly plugged to the mainboard) and set windows and everything up. As soon as I connect some cards with risers (all working, got the new 009 series with leds) I get no image at all. So I removed all risers, put one card directly on the asrock 110 pro again --> working. Connected 4 more cards with risers and started claymore --> 4 gpu are mining instead of 5. Took away the card from the from the pci 16 slot and again no image. So what's wrong? I get only a screen when the card is on my board, lol. I didn't had similar problems the first time, any idea what setting is wrong?
convert your system disk to GPT and boot Windows in UEFI mode.
also enable multi-monitor and set primary graphics card to iGPU in BIOS.