The VGA lead is connected to the C65GS FPGA board. And again from above:
So then I tried to turn it on, which, pleasingly resulted in the back-light illuminating, but sadly not in any picture.
So flip the panel over and check that everything is properly connected with the data cable:
The panel end of the cable wasn't quite in properly, but once it was then things were happy:
The next steps for laptopification are now likely to be in the direction of designing a 3D CNC millable case, that can hold the screen, FPGA board, keyboard and other components. This is where I step outside my current expertise. If anyone is interested in helping to design the case, I would welcome their assistance.