Asus is always a bit of a gambling game it may or may not work. One thing you should try is to connect your Display to the IGPU and then try to enter the bios setup Utility to get all the settings into place. Once done your dedicated GPU should work as well.
@WalOOdy hier ist Dein Request Mod für das H77-D3H Rev.1.x
Hello! After a video change to IGPU, there is no change, then the motherboard is not suitable for Ozmosis