Black screen after refresh rate change

[roromush]

Hi there.

The commands are in post #4.

Just run them one at a time in Terminal

I'm blind thank you!

 

[YT21Labs]

Boot to safe mode, and delete those files, reboot.

Sorry i see you even can't boot to safe mode, then boot to recovery mode, grab the terminal from top menu:

cd /Volumes/your startup disk name/Users/your username/Library/Preferences/ByHost/
rm -f com.apple.windowserver.*
rm -f com.apple.preference.displays*

how do i do this on catalina

 

[Feartech]

how do i do this on catalina

As per rules, please update your hardware profile to allow others to help you easier

https://www.tonymacx86.com/account/account-details

 

[YT21Labs]

As per rules, please update your hardware profile to allow others to help you easier

https://www.tonymacx86.com/account/account-details

sorry seems to have gotten reset