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Macbook Pro won't boot and getting gray screen, help!

14875 Views 7 Replies Latest reply: May 1, 2013 11:43 AM by Eric Ross RSS
Ed81969 Calculating status...
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Sep 1, 2012 9:08 PM

I have a Macbook Pro 15" from mid2011. The warranty just expired one week ago.
I was normally using it without any problem, when suddenly the screen started to freeze and get some horizontal line. I had to force shut down with the power button couple times. The next day, my MBP wasn't booting during the startup.

 

When I turn on, I can hear the chime, the Apple logo show up and the little wheel turns, but after those things the screen remaing gray without any thing happens.

 

I have tried some steps that I found on discussion, forums, and websites like:

 

- PRAM

- cmd-s (to verify and clean the HD)

- hold option and restore using a flash drive with Mountain Lion (after I choose the drive, I get a "blue" screen)

- Remove the RAM and put back

 

All those things weren't successful.

 

What do you guys think I should do now?

 

What are the main causes of gray screen or blue screen?

 

Should I replace my RAM or HD?

 

I'm avoiding to take to a technichian or a geek, because I have a lot of confidential work inside. Luckly, I have a backup of everything.

 

I appreciate every reply made.

 

Thanks!!

MacBook Pro, OS X Mountain Lion (10.8.1)

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