So I bought this guy second hand and it'd been sitting in a garage for a good while. When I got it home and setup, I realized that at some point mice had made a home in the side panels. They chewed through a few of the different wires. Before I could do anything, I had to replace the fuse line, but that got it working(ish). The control panel still needed work, but for the time being I could run it with default settings. Recently I finally got around to buying a replacement screen, 16 pin cable, and a 14 pin cable and got to work on the display. The control panel works now; however, the display is still not working. It turns on, but only if the connection to the motherboard is just right, and the screen is completely black aside from a single solid line through the middle. I'm at a standstill on it now. I can't think of anything else. Anyone have any ideas?
P.s. it is the same whether the USB is connected or not, and I've tried every port and two other laptops all running windows 10.