I have an iMac OS X Yosemite that has been regularly updated,latest update to OS X El Capitan, an have lost sound from my internal speakers,I get the normal startup sounds and then nothing. System preferences for sound output show: Digital Out Optical digital-out port with no options to change to Internal speakers Built-in. How can I fix this ongoing problem?
iMac, OS X Yosemite (10.10.5)
Hi, Judy.
Thank you for visiting Apple Support Communities.
I understand the sound on your iMac doesn't work. I would recommend resetting the SMC and NVRAM via the steps in the article below.
Reset the System Management Controller (SMC) on your Mac
How to Reset NVRAM on your Mac
You have gone through the steps in the article below already so if the issue persists, please reach out to us via phone for further assistance.
If the issues persist, contact Apple support for further troubleshooting assistance.
Troubleshooting issues with no audio from built-in speakers on Macs
Cheers
No sound
