Languages

Archived - MacBook Pro (Early 2011): Gray Apple logo screen at startup

This article has been archived and is no longer updated by Apple.

Symptoms

Learn what to do if your MacBook Pro (Early 2011) starts up to a gray screen with an Apple logo and without a progress indicator.

 

Gray startup screen

Resolution

This may happen if the computer starts up from the hard drive or from an external drive using the wrong version or build of the operating system.

Reinstall the correct operating system build by using Mac OS X Install DVDs included with the computer. You can also use a later build, but never install a version of the operating system released before the computer.  

Learn about restoring the correct operating system version using a restore DVD or Time Machine backup.

Additional Information

To confirm that the computer is attempting to start up from the wrong operating system version, start up the computer in verbose mode:

  1. Shut down the computer if it is on.
  2. Press the power button to start the computer.
  3. Immediately press and hold the Command (Apple) key and the "V" key (Command-V) for verbose mode.  

Verbose mode is on if you see white text appear on the screen as in the image below.

If the computer has the wrong build of the OS installed, the startup process will stop. The following line of text will appear on the display: "Loading System\Library\Caches\com.apple.kext.caches\startup\Extensions.mkext."

Verbose mode 

Exit verbose mode by pressing the power button until the computer shuts down.

Last Modified: Jun 12, 2012
Helpful?
Yes
No
  • Last Modified: Jun 12, 2012
  • Article: TS3676
  • Views:

    9742
  • Rating:
    • 20.0

    (1 Responses)

Additional Product Support Information

Start a Discussion
in Apple Support Communities
See all questions on this article See all questions I have asked