My built-in camera on Macbook Air is not working

Camera on Macbook Air has become disabled. All applications requiring camer (FaceTime, PhotoBooth, etc) state that "there is no connected camera".

This one stumped me for a while too. Sometimes it would work (usually after a restart) but then would stop working some indeterminant amount of time later. I think another process might be using the camera.
Go to Terminal.app and type in sudo killall VDCAssistant (and enter your admin password; alternatively find the VDCAssistant processing Activity Monitor and stop it that way). This will stop other processes that might be reserving the camera.

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    Please take the Mac to  Apple store to have it checked out.
    Genius Bar reservation
    http://www.apple.com/retail/geniusbar/
    Best.

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    Why start a new and very similar thread to your other one which you have not responded to (have you read the replies?)
    I suggest that no response is made to this duplicate thread. 

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         Reset SMC.     http://support.apple.com/kb/HT3964
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    Peace.
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    I tried ti shut down and The...: Apple Support Communities

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    Message was edited by: mike1234i

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