Released October 24, 2011 / 2.2, 2.4, or 2.5 GHz Quad-core Intel Core i7 Processor

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Why my mac some "po" sound

when i use my mac, it will be has some sound like "po".

I do not know why.

help me !!!!!!!

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When does it make this sound?


When do you hear this sound when you just start your system up? When you hit a key on the keyboard? When you insert a CD/DVD disk into the optical drive? If something else fully explain what and when.


i am watching moives, doing doc.

it will has be this sound variable interval.


See if this sound is occurring at specific times, like on the hour or 15 minutes after the hour


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Chosen Solution

Check settings for System Preferences->Date & Time: Clock->Announce the time. OR System Preferences->Sound->Play feedback when volume is changed. - Play user interface sound effects

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