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?

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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.

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i am watching moives, doing doc.

it will has be this sound variable interval.

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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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