Built a PC, video output doesn't work through HDMI

Yyyfa

Honorable
Dec 13, 2013
24
0
10,510
I'm built a PC a few hours ago and assumed I didn't have the correct DVI cable to connect my GPU up to my monitor (which I don't) so I used HDMI. I dunno what's happening. Tomorrow I'll go out to BestBuy and buy a Dual Link DVI-D, but I'm confused as to why HDMI doesn't work as a video output right now. Any help? (first build BTW yay)
 
When you say HDMI:
Are you using a HDMI output on your graphics card?
Are you using a HDMI input on your monitor?
Are you using any adapters?
Is the HDMI input selected on the monitor?
What resolution are you running?
Has the computer output video at all to any device?
Has the monitor displayed video at all?