I'm building my first pc and am currently undergoing a test build. I set everything up and plugged my monitor into the hdmi slot in my video card. Powered on and nothing happened. So I decided to plug the hdmi cable directly into my motherboard. When I powered on with this setup I got bios, with some options to do things like "load default optimization, then boot". So why can't I plug in through my graphics card? Someone suggested to me that I need to install drivers and/or disable my mb's onboard graphics, but in a build video I saw, the guy basically did exactly what I am doing and got some information on his screen. I know my card is powered on because the fans are working.
Update: I only have one pci express plug plugged into my graphics card, but my card has 2 pci-e sockets. Do i need to plug into both of them?