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I just upgraded the memory of my macbook pro, now I have switched it on all I have is a black screen

I just upgraded the memory of my macbook pro, now I have awitched it back on all I have is a black screen but I can hear the drive working

Posted on Jan 19, 2013 5:34 AM

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I just upgraded the memory of my macbook pro, now I have switched it on all I have is a black screen

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