Flip the computer so that it is now sitting on its base

There are 3 newly-exposed ribbon cables that need to be removed from the motherboard

Instead of flipping the black/blue part, flip the white part of these smaller connectors

Remove the 2 standard screws securing the casing pieces together

I recommend flipping down the connectors while resuming repair so they don't get accidentally broken. It is an incredible pain to fix them if they do