@aussie-daredevil Then I recommend starting from scratch with the new disc, make sure it works, then transfer your files to it from your old drive - ROMs/artwork/etc. See the 2nd backup method explained in the docs - https://retropie.org.uk/docs/Updating-RetroPie/#making-a-backup-option-2.

Does anyone know the type of connection on the wires in my first photo please?

Looks like you are doing it wrong. Try it a different way, one that works