Can't launch RetroPie Setup or Raspi-Config (Black Screen)

[CubesTheGamer]

Pi Model or other hardware: Raspberry Pi 4 Model B+ 4GB model
Power Supply used: Cana Kit included type-C adapter with power button adapter
RetroPie Version Used (eg 3.6, 3.8.1, 4.1 - do not write latest): 4.7.1
Built From: Raspberry Pi Imager from official raspberry pi website.
USB Devices connected: wireless Logitech keyboard/trackpad
Controller used: None. Just used keyboard.
Error messages received: None.
Verbose log (if relevant): Not relevant.
Guide used: The Fastest and Easiest way to Install RetroPie on a Raspberry Pi (Quick and Easy Tutorial) by Mr. Sujano posted on July 9th, 2020
File: Unknown.
Emulator: EmulationStation?
Attachment of config files: /dev/shm/runcommand.log does not exist. Was able to load a Pokemon Red ROM just fine actually, so I'm just having issues with the RetroPie OS itself.
How to replicate the problem: Try pressing the "A" button on Retropie Setup or Raspi-Config. It will sit on a black screen eternally. The only way to get out is pressing the "Start" button (I mapped to Escape key on keyboard).

I was able to get SSH enabled despite not being able to access the configuration pages. I had to remove the microSD card and create a file "ssh" to get in. No "runcommand.log" file is created when I try going into these settings. I haven't tried to launch a ROM on this install yet.

[mitu]

This usuall happens on the Pi4 when you're using a 4k resolution, for some reason the setup dialogs are not properly displayed.
Edit the config.txt file on your SD card (you can edit it from a PC) and add 2 lines at the end:

hdmi_max_pixel_freq:0=200000000
hdmi_max_pixel_freq:1=200000000

Try booting again your RetroPie system and see if you can open the setup script or raspi-config.

[Lukli]

@mitu I have a 1440p monitor and it doesn't work
Should I also add those lines?