audiomacmacosscreen
I was deleting some CoreServices and without knowing what OSDUI helper does I deleted it instead of renaming it as .disabled and now when I change the brightness or sound I don't see an on screen indicator like before which shows the current level of sound or brightness – this is my assumption.
Even accesibility is not opening
I don't know why this is happening!
This has happened to me before. I discovered that if you start VLC before you plug the HDMI cable in, it won't play sound out the correct output. This works consistently for me:
Hope it helps.
The Deleted Users folder contains DMGs of users that you've deleted. When deleting a user in System Preferences → Users & Groups, you are given the option of saving that user's home folder as a DMG in a Deleted Users folder:
- Save the home folder in a disk image
The disk image is saved in the Deleted Users folder (in the Users folder).
Selecting the Save the home folder in a disk image option will cause the home folder of the deleted account to be saved in a disk image
If there's nothing in the account that you want any more, you can safely delete the disk image from the Deleted Users folder, or even the entire Deleted Users folder itself.
Best Answer
I would suggest reinstalling macOS. Shutdown your computer, power it back on and immediately press and hold Command + R. When it finishes booting, select your language and select Reinstall macOS. Follow the prompts. Apple support link for more info. This shouldn't overwrite your personal data, but I always recommend having a backup just in case.
It's generally not a good idea to be deleting or changing files in the System or Library folders unless you know exactly what the file does and you are willing to accept the risk of an unstable or broken system.