jfsabando

Q: MacBook Pro won't startup after last iTunes update

I'm using the latest model of MacBook Pro with Retina display, bought it in August in an Apple Store. After download and install last iTunes update though App Store the computer asked me to restart in order to finish the procedure. After it restarted the logo of Apple appeared and also the progress br indicating the remaining time. When it finished now it gets stuck on the apple logo screen and won't continue.

 

Can someone provide me a step by step procedure to solving the problem? I don't have storage backup so the method with less risk to losing information will be highly appreciated. Thanks

MacBook Pro with Retina display, OS X El Capitan (10.11.2)

Posted on Dec 12, 2015 2:14 AM

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Q: MacBook Pro won't startup after last iTunes update

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  • by jfsabando,

    jfsabando jfsabando Dec 12, 2015 3:13 AM in response to jfsabando
    Level 1 (0 points)
    Dec 12, 2015 3:13 AM in response to jfsabando

    I have tried booting it on safe mode, recovery mode but they won't work either. Is there another way to enter recovery mode other than pressing command + r?

  • by K Shaffer,Helpful

    K Shaffer K Shaffer Dec 14, 2015 6:17 AM in response to jfsabando
    Level 6 (14,523 points)
    Desktops
    Dec 14, 2015 6:17 AM in response to jfsabando

    You may try to see if you could use an externally enclosed hard drive location

    as a new installation, for a new OS X download from Internet Recovery, so the

    internal hard drive may not be overwritten... There are links from Recovery

    pages in Apple support. (But this may not be possible with a failed Mac.)

     

    How to install OS X on an external drive connected to your Mac - Apple Support

     

    Or create a bootable installer of the OS X in your computer, on an external USB

    flash drive or other, using this: http://diskmakerx.com/

     

    However in the attempt to boot into OS X Recovery, what happened? Did you

    hold the keys down for awhile after the restart tone, then let go, or try holding

    them down longer to see if that little difference mattered? And did you try more

    than three times, to get into the computer using Recovery?

     

    If you can get past the desktop and access OS X Utilities, there are options.

    One of them would be to attempt to reinstall the OS X. Another would be to

    see if Disk Utility can repair the system, and a few others.

     

    • General ideas, here: (incl. second means to attempt access to Recovery*)

    http://pondini.org/OSX/RecoveryHD.html

     

    "...* Start your Mac while holding down the Alt/Option key.
      That will bring up the Startup Manager, showing all possible startup volumes"

     

    • Apple OS X and Time Machine Tips:

    http://pondini.org/OSX/Home.html

     

    Given you state the computer is relatively new, there would be good reason to

    see if the Apple Store (retail official) in your area has Genius area staff and if

    you can get an appointment or reservation to have this issue checked into and

    have a diagnostic performed. There may be some kind of hardware issue, there.

     

    If so, then some kind of repair or other action may be done to resolve the problem.

    http://www.apple.com/retail/geniusbar/

     

    {If there is no Official Apple retail Store, only Authorized Apple resellers &/or

    authorized service providers, you may still be able to get help; some locations

    may charge usual and customary fees for shop time or diagnostics; independent

    authorized Apple affiliates may operate under different rules than official Stores.}

     

    Not knowing if you have any previous experience with OS X (older or newer)

    I'm not quite sure what to suggest; some things I know about may require a

    few steps in advance of a problem, such as backups or external drives with

    system clone that can test/boot the subject computer to check internal drive.

     

    Since your post appears to have been here for some time, and we're looking at

    a weekend interval and difference in the time of day in these time zones, hard

    to say who may be online (sooner or later) across the world; and of them, who

    may have ideas that they can translate into a course of workable action for you.

     

    I'd try OS X Recovery again, and note the info from the pondini linked page...

    He's not around anymore and we're lucky that someone has kept the URL up.

     

    At near 3AM local time, I'm going offline...

    Good luck in this matter!

  • by jfsabando,

    jfsabando jfsabando Dec 14, 2015 6:19 AM in response to K Shaffer
    Level 1 (0 points)
    Dec 14, 2015 6:19 AM in response to K Shaffer

    Thanks for your help! I tried everything you said but still it didn't work. I had to take it to an authorized service center. It's a shame that an error like that happens after installing authorized software.

  • by K Shaffer,

    K Shaffer K Shaffer Dec 14, 2015 12:26 PM in response to jfsabando
    Level 6 (14,523 points)
    Desktops
    Dec 14, 2015 12:26 PM in response to jfsabando

    Another item a service tech may have tried, is an SMC reset...

    • Resetting the System Management Controller (SMC) on your Mac -- Apple Support

     

    Not sure why it may help, but years ago some items where tried

    and some suggested it was like \ / ( ) ( ) | ) ( ) ( ) ... that being to

    use 'repair user permissions' in the earliest OS X able to do so.

     

    To throw everything but the kitchen sink and see what sticks...

    Avoid the sink because water isn't helpful with most electronics.