What a strange noise

when i open the cover or move.
it has strange noise come out.
it seem like a paper cut sound
or whatever
absolutely not come from the speaker i mute it before.
macbook pro early 2011 15"
i upload video here http://www.twitvid.com/ULTV1
check it out , sorry for poor quality of video

Is it a low hum or buzzing? If so, tht may be an indication of hardware failure. Though Iwould be hard pressed to explain a buzzing noise to an apple tech. Regardless, if AppleCare is still active, head to the nearest apple store and have them document the situation so that in the future you have btter chances of making a claim if something happens later on.

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