Chosen Solution
I know someone asked this question but the answer really wasn’t a huge help. Wont power on and I know its because of this. How the heck do you get the ribbon all the way in?!
Answered my own question within 5 minutes. install the bracket behind the cable and between the midwall. Then use a small piece of scotch tape to pull the ribron cable into place!
Just remove the midwall, the ribbon wraps up and just push it in. but the scotch tape pull is a great idea, nice thinking outside the box.