How can I remove a video card and get my monitor to work?

I bought a computer (tower only) on ebay. The guy said that it was set up for onboard video but he had a video card that he put in the computer because he didn’t have any other way to ship it (btw I have no idea what any of that means). I set up the computer and I can’t get any image on my monitor. I have my old computer (dell) which I could pull a video card out of. What do I need to do. Oh, and the guy shipped the computer in a box with absolutely no packing materials; it was just sitting in a box. So it could also be completely busted I have no idea.
OK, I tried to get to the video card but the housing for the printer input is on top and I can’t figure out how to remove that.
Also, there is only 1 input for the monitor cord.

By: Michael A

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