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unusual sound while booting up mac

261 Views 6 Replies Latest reply: Oct 14, 2012 12:11 PM by KianaDarkrose RSS
AnuragKanaujia Calculating status...
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Oct 13, 2012 10:34 AM

When I boot up my system, it makes an ususual sound just before the screen start displaying. Please tell me whether it is an issue or not, I am not able to figure it out.

iMac (21.5-inch Mid 2011), OS X Mountain Lion (10.8.2)


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