Continued from my previous reply.
Safnaj Said:
"Sound constantly disappears in MacBook Pro [Ventura]: I already tried with new admin user and safe mode. It's not working. If its a hardware issue why the audio is working for a while when I force quite coreaudiod ?? I want to have a screenshare, how is this possible ?”
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Getting the macOS Speakers Back:
Two Major Thoughts:
A. Restore form a Backup:
Did you create a backup of your Mac prior to upgrading? Is so, then restore from the backup. If not, then take this as a learning experience, knowing to always backup your Mac, prior making any major changes to your Mac (i.e. upgrading your MacOS).
or...
B. Reinstall the macOS Anew:
The ultimate workaround would be through a new install.
Reinstalling the macOS Anew:
Try This:
1. First, Backup your Mac, then
2. Then, install your macOS Big Sur anew.
3. Finally, migrate it over from the Backup created in step 1
In Depth:
1. Back up your Mac:
Start by Creating a Time Machine Backupof my Mac. That way I could be assured that Incan recover my Mac, should I need the App back or if anything goes wrong due to the removal. So, Create a Time Machine backup of your Mac, so that you can have something to restore your Mac from, should anything go wrong with the reinstall.
2. Use a USB Bootable Installer:
Create a USB Bootable Installer for Big Sur. Delete the hard drive's partition. Then, install this macOS with. Go Here: How to Create a Bootable Installer for macOS - Apple Support.
3. Migrate and Reinstall Data and Apps:
Next migrate it over from the Time Machine Backup you created in step 1 to this new install.
No Success?…
Get this Diagnosed by Apple:
Apple might fix it free of charge, if found to be be faulty device. Set up a Genius Bar Appointment at your local Apple Store. There, it will be looked at and you'll be provided with your options.