mac book pro shutting down halfway during start up
mac book pro shutting down halfway during start up
mac book pro shutting down halfway during start up
Do you mean you see the bar loading on the screen and then it shuts off? If so that indicates that the startup disk can't be mounted and may have failed
otherwise how did yo determine it got halfway through?
What model MacBook Pro?
what OSX version?
Assume Lion or later, boot to Recovery
OS X: About OS X Recovery - Apple Support
and repair the startup disk
mac book pro shutting down halfway during start up