No sound after upgrade of Sierra

After the upgrade to Sierra, I have no sound.  Did a search, which was told to reinstall the operating system.  However, when I try to reinstall, it says I can't because I have a latest version.

Any suggestions?  Thank you...

FWIW, it looks like you were in the public beta program and don't exclude therefore ended up with a 10.12.1 beta that would be most recent. All you can do is to wait for the release of the new version of Sierra.

It could be something else, check 'about this Mac' and see what version it says is installed.

Tags: Mac OS & System Software

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