MacBook Pro mid 2012 not working
Please help, my MacBook won't open the screen. It's black and not working, what should I do?
[Re-Titled by Moderator]
Please read If your Mac doesn't start up all the way - Apple Support.
If your Mac starts up to a blank screen - Apple Support seems to be applicable in your case. Follow those steps all the way to their conclusion:
"If the issue continues, contact Apple Support."