New motherboard and graphics card, but monitor not working

Hello!

I have bought a new graphics card and motherboard. I've installed everything and it works but my monitor isnt working. I have dual monitors, one connected via hdmi and the other is dvi. My specs are: asus b150 motherboard pro gaming d3, geforce 1080, intel i7 processor.

The instructions manual said i should install a dvd that supports the motherboard, however i did not get a dvd for installation, plus if i did, my tower doesnt support any dvds. I dont know if this is one of the problems why my monitors are not working.

Help would be appreciated!