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Why won't my MacBook Pro start up from the grey prohibitory sign?

My MacBook Pro won't turn on from the grey screen. I have tried refreshing the RAM, and that has not worked. I tried placing the start up disk into the computer when turning it on and that still has done nothing.


It takes a while for it to get to the prohibitory sign. Before the prohibitory sign it usually has an apple and it just sits there for a while.


I don't know what to do.


Help is wanted.


Thank you very much!

MacBook Pro

Posted on Jan 10, 2013 1:57 PM

Reply
32 replies

Nov 4, 2013 11:25 AM in response to Projectorize

I installed a new and better HD (500gb) and that fixed the problem. Before, I had it backed up on an external HD but that wouldn't work because I didn't have the re-install discs copied to it. But, since the new HD, its been back to normal for the most part. The only difference is that when I close it to sleep, the light doesn't just go off like it used to; instead, it stays lit up for a moment then goes off.


I ordered my HD from OWC, but if I could do it over again, I probably would have just went to Office Depot and picked one up because they are around the same price, yet the one one OWC did come with the tools I needed to replace it.


Good luck to you!

Why won't my MacBook Pro start up from the grey prohibitory sign?

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