Hout007 Said:
"Sonoma 14.0, the speaker and video does not work: Hi, I need help ! my Mac. after updated to Sonoma 14.0, my Mac. can not play video and the speaker is not working too, I try to check Sound in Setting, the output in not in mute style. I have no idea how to fix it."
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Getting Macintosh Speak and Video Working:
Reinstall the macOS:
It may have been an unsuccessful install (which is what a reinstall is intended to fix). Nothing would be deleted. It's just that items that have become corrupted or deleted, would be replaced or reinstalled back to where they should be, respectively. Go Here: How to reinstall macOS from macOS Recovery - Apple Support
Important:
Create a Time Machine Backup, First:
Prior to the re-installation of your macOS, be certain to backup your Mac using a Time Machine Backup. That way, you can have something to restore your Mac from, should anything go wrong with the reinstall. Use an external hard drive that is at least 1.5 the total storage capacity.