@griff How does it plug 'directly' ? GPIO/HDMI ? Check the screen vendor instructions on how to get it to work with Raspbian and apply those instructions to your RetroPie system.

Use login: pi password: raspberry

@hurricanefan Here's hoping!

@chip hey finally I solved this. I did not flash the file with Applepi Baker instead, I used Etcher. Thank you so much for your reply! :)