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my macbook will not reboot?

220 Views 4 Replies Latest reply: Dec 29, 2012 2:28 PM by pcandoli RSS
pcandoli Calculating status...
Currently Being Moderated
Dec 29, 2012 1:58 AM

I had to force shut down my macbook and now it will not reboot. After the login window I get a grey screen with the spinning gear and nothing else happens. I have tried to start in safe-mode to no avail. I restarted with Command R and have tried Disk repair, restore to a previous version and reload OSX, nothing has work. The only thing I can do is get to the Safari window to use the internet. Please help before I purchase another computer. Computer skills and patience at a very low level. Thanks.

MacBook, OS X Mountain Lion (10.8.2)
  • BGreg Level 6 Level 6 (17,500 points)
    Currently Being Moderated
    Dec 29, 2012 5:23 AM (in response to pcandoli)

    Need some more details to help...


    When you booted to the recovery partition (command + r), and brought up Disk Utility, when you tried to repair the hard drive, what happened? Were there any error messages?


    When you try a safe boot (boot with shift key down), what happens?


    When you tried to reload OS X through recovery, what happened? 


    Sounds like you may have seen this Apple note on booting with the gray screen/spinning wheel.


    You didn't mention if you did a PRAM reset:


    1. Shut down your Mac.
    2. Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    3. Turn on the computer.
    4. Press and hold the Command-Option-P-R keys before the gray screen appears.
    5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    6. Release the keys.
  • BGreg Level 6 Level 6 (17,500 points)
    Currently Being Moderated
    Dec 29, 2012 10:22 AM (in response to pcandoli)

    Is your MacBook older, say pre-mid-2011 or newer? Or put another way, did it come with OS X 10.7 Lion or OS X 10.8 Mountain Lion?


    When you boot to the recovery partition, and bring up Disk Utility, when you clicked the first aid tab and Repair Disk, did you do that on the volume and/or the partition? The volume would be the left-most entry, with the partition indented below that. You can repair both. Did you try repairing both?


    It's too early to say that the hard drive has unrecoverable issues. Typically, when there are hard drive issues that Disk Utility can't repair, the next step is Disk Warrior (assuming there's not an obvious hardware issue).  Some use TechTool Pro, but Disk Warrior has been the greater tool of choice for disk repairs.


    If you can, it would be good to run the Apple Hardware Test. If your MacBook came with OS X 10.6 or prior, you have the original OS X disk to run the hardware test (the disk that says in small print on the label 'AHT Version x.x' is the one to use).  If your MacBook came with Lion/Mtn Lion, you didn't get any DVD's, and should follow the steps in the Apple note.  If you're able to run this, it will help determine whether there is a hardware issue with the hard drive. If not, then Disk Warrior can likely fix the drive. The hardware test can take over an hour, depending on how much memory you have installed.


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