LCD won’t work

I finally got around to installing my LCD and followed the directions on line but screen does not light up. I have pictures of my set up but it won’t allow me to add pictures to this post. The ribbons are connected to the adapter are shown on the instructions and the adapter is attached with the arrow pointing away from the usb plug on the board. The screen has no back light it seems dead. The board works great with my laptop but the screen shows nothing.

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