No multiple monitor supports; computer seems to not recognized the HDMI ports

GIGABYTE LGA 1151 Z170 HDMI 2-Way CrossFire ATX DDR4 Motherboards GA-Z170-HD3 Core i5 Geforce 1050ti

Ok, so I have the web drivers installed. But the computer is not recognizing the HDMI ports, of which I have four, and only recognizing the DVI port (which I have one of).

Would really like to have dual monitors, but I can't seem to find much on this problem via google.