To guinaaa: I think you have 2 problems: 1 - the problem of starting this motherboard - I had the same - you should clear the bios of this motherboard (I used the jumper on it) . The second problem - no screen ... miner - you should use built-in videocard of the motherboard (change setting in bios of motherboard) and you should assign miner to this rig. Sorry for my English.
Just returned my h110 pro btc, no display from internal or external graphics. Tried cmos clean and everything else but no result. Think it has faulty but others hade theres one working fine. Did yours start ok on the first try? Cheers