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I've just upgraded my imac (late 2015) to monterey and the built in speakers are not showing in systm preferences sound output. Also the Mute box is ticked but greyed out and cannot be unticked. Any thoughts

I've just upgraded my imac (late 2015) to monterey and the built in speakers are not showing in system preferences sound output. Also the Mute box is ticked but greyed out and cannot be unticked. Any thoughts?

iMac Line (2012 and Later)

Posted on Jan 11, 2022 4:53 AM

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Question marked as Top-ranking reply

Posted on Jan 11, 2022 5:42 AM

Reset the NVRAM.

https://support.apple.com/en-us/HT204063


Startup in Safe Mode followed by a restart.

https://support.apple.com/en-us/HT201262

4 replies

I've just upgraded my imac (late 2015) to monterey and the built in speakers are not showing in systm preferences sound output. Also the Mute box is ticked but greyed out and cannot be unticked. Any thoughts

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