So i haven't used my PC in a long while. When i came back to it things were rust, including the connections in my GPU. It, however, still worked and after fixing a few things with my motherboard i could only get it to display with the old HDMI chord i had, and the new ones just wont work. I'm confused why I can only use this specific HDMI chord with my computer, as all others say there's no connection. Please help!