Well, two initial thoughts:
1) The HDMI mini adapter has apparently gotten permanently stuck/fused into the slot on my GPU. I hope I didn't damage anything while trying and failing to remove it >,<
2) The amount of dust in the computer is not as bad as I thought it would be, though there is still a lot
@VK3VKK That's probably what happened. Looking at my graphics card specs online, it looks like it does have a DisplayPort
@Zauberin Happy to have helped
^,==,^