Black screen please help

Ramazawolf

Reputable
Aug 3, 2015
4
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4,510
So I recently made a computer (Radeon 390x, EVGA 850W, Asus Z97 Pro Gamer) everything worked fine for the first day then I noticed I was using integrated graphics, so I tried to switch to my graphics card. At first I was using VGA cable for integrated graphics so I had to switch to DVI cause of the graphics card. After I switched to dvi my monitor is black (the monitor works because when I unplug the DVI cable it says no signal) so I tried to switch back to VGA but it says no signal. I cannot use my computer because if black screen. Help please
 
I don't think its the graphics card because it is also a black screen when I plug the dvi cable in the motherboard. Is it because of my monitor? My monitor is fairly old.