Replacement macbook doing the loud beep again when I click on isight in imovie.

[amycishere]

I was sent a replacement mac for this very reason and my new one is doing the exact same loud beep. It really scares the you know what out of me every time it goes off. Spent over an hour on the phone with applecare and tried to take the battery out and reset whatever that was like they told me and still nothing. Does anyone have a way to fix this?