3 Replies Latest reply: Jan 26, 2013 9:58 PM by anjalibansal Branched to a new discussion.
Dcgarcia4 Level 1 Level 1 (0 points)

My MacBook Pro is not booting up. After I press the power button the grey screen screen comes up with apple logo and progress wheel. And it just stays like that. I waited about 30 minutes to see if anything would happen but nothing. I tried a soft boot but that did nothing and another where I had to press the command, option, P and R keys and that did nothing as well.


MacBook Pro

15.3 in. 2.53 GHz

Bought it in the summer of 2009

Updated OS X to mountain lion


What is wrong with my computer and how can i fix it? Any help would be greatly appreciated. Thanks!

MacBook Pro, OS X Mountain Lion (10.8.2)
  • 1. Re: MacBook is not booting up
    Kappy Level 10 Level 10 (226,690 points)

    Reinstalling Lion/Mountain Lion Without Erasing the Drive


    Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.


    Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.


    When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.


    Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.


    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

  • 2. Re: MacBook is not booting up
    JiaChe Level 1 Level 1 (10 points)

    It could be a batterey problem, check if you have 0 batterey

  • 3. Re: MacBook is not booting up
    anjalibansal Level 1 Level 1 (0 points)

    if the repir permissions column show disturbance  then what shd be done, thanks