Laptop Display no longer initializes but external works

All of the sudden the laptop display no longer works. Red flashing lights and no evidence of the monitor in devices suggest its not initializing. Seems like the cable to the board.

I disassembled, tried another display panel but nothing. I looked all over for anything that could have come lose. I can only guess that the wire at the hinge wore.

Post a picture of the place where you suspect damage, describe the steps you have taken so far to isolate the problem.

Have you tried to reseat the display cable to the motherboard?

Yes, several times