How can I get the sound to come back to my mac pro?

I followed the 'aid' on getting no sound and I don't not what they say will be displayed on the output. Only Optoca; digital output port is

Try holding the "Option" key and clicking on the speaker in the menu bar. Make sure your speakers are checked. In addition, it's silly, but make sure they are plugged in and turned on.

Tags: Notebooks

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