My mac wont start. I turn on the power and I hear the boing sound and see the apple on a grey screen and then nothing. It goes blank

My Mac wont start up. I turn it on and hear the sound,sea grey screen withy he apple and then it turns off after a few seconds.

iMac, iOS 4.1

Posted on Sep 29, 2013 8:09 PM

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My mac wont start. I turn on the power and I hear the boing sound and see the apple on a grey screen and then nothing. It goes blank

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