The problem is that your Pi is trying to display the wrong resolution - it defaults to 1080p, but the screen is 800x600. In order to force the Pi to display at the correct resolution, you have to append this to config.txt: max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0 hdmi...

Hi guys, I'm new to the raspberry pi world but slowly getting more confident, I have bought a 5" screen and got it all hooked up to run retropie, I have tested it on a large monitor and it's fine but when I plug into the 5" screen about 20% on the right hand side is blank/ has line running down it. ...