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Post originale di: originalmachead ,

Testo:

''Some hard drives tick when failing.''  Depending upon which which diagnostic LED is blinking it could be that you don't have the [http://support.apple.com/kb/HT2652#|air deflector shield] in the proper place.

'''Try booting from your diagnostic/install CD/DVD''' and run AHT (apple hardware test).

''If this answer is acceptable '''please remember to return and mark it'''.''

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