Problem during installation

Hi,

I'm trying to install macOS Sierra on this build: - Asus Maximus VIII Extreme - i7 6700K - Asus Strix 980Ti - Samsung 850 EVO 500GB

I've tried both UniBeast and Clover vanilla but I got stuck on a "Denied Symbol" after choosing my Sierra disk from Clover and seeing an Apple logo for a few seconds.

I'm surely doing something wrong but I can't understand where.

I've tried to set the BIOS as other Asus Z170 motherboards but it still doesn't work.

Any help is really welcome.