MacBook Pro doesn't start after recent iTunes update

I use the latest model of MacBook Pro with the Retina display, bought in August in an Apple Store. After download and install latest iTunes update that App Store the computer asked me to restart to complete the procedure. After it restarted the Apple logo appeared and also the br of progress indicating the time remaining. When it finished now it is stuck on the apple logo screen and will not continue.

Can someone provide me a procedure step by step to solve the problem? I do not have backup storage so the method with less risk of losing information will be highly appreciated. Thank you

I tried to start the safe mode, recovery mode, but they no longer work. Is there another way to enter recovery mode except by pressing command + r?

Tags: Mac OS & System Software

Similar Questions

Maybe you are looking for

  • iMac 2015 Unable to Boot Camp and Windows Installer

    I've been back and forth with a Service guy to customers by phone, but thought I'd throw so the question in the case to see if there were others who have experienced similar problems and might be able to help. I have an iMac, retina 5K, 27 - in, end

  • Drive D - problem with sound on Satellite Pro P100

    I have a problem reading CD & DVD on my laptop. DVD images are fine, but the sound 'crackles & misses' also with CD I can copy the CD on my hard drive and read them from my hard drive ok. I tried Windows Media player, Real Player, Nero & Inter video

  • Color display monitor

    Wallpaper is green color, if no real light in pictures.

  • My hotmail Inbox loads, but I can't open any email or switch to other records

    This just started today and happens only on the desktop that has Windows Vista.  My laptop have Windows XP and hotmail works very well.  When I load hotmail on my desk the Inbox of the charges but cannot open any email or switch to other folders.

  • toolbar has moved

    my toolbar has moved from the bottom of my screen to the left, how can I get that back down?