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I don't often use my built in microphone (or any audio input) but today i need to use and it doesn't show any input. That is unless I tap the left speaker, then it does record the taps. But nothing else.

How do I fix this?

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Open up "System Preferences" then the Sound tab. Make sure "Internal Microphone" is selected, and that the input volume is turned up.

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I done that already to no avail, and reset the Pram or something – Jonathan. Apr 3 '11 at 21:11

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