iMac will not boot up!

Discussion in 'Mac Basics and Help' started by Topher15, Jun 20, 2009.

  1. macrumors 6502a

    Topher15

    Joined:
    Oct 22, 2007
    Location:
    London
    #1
    A few hours ago my iMac froze. I was able to move the mouse pointer around the screen, but couldn't do anything else.

    I restarted the computer only to find that Quicktime and iTunes wouldn't open.

    I then ran Software Update and attempted to install various updates, including 10.5.7, however after downloading the update it said the package had been altered since being sign off by Apple and was automatically sent to the trash.

    I did install the other updates, including a Quicktime update, however at the restart it remained stuck on the gray startup screen, with the Apple logo and the spinning gear. It remains on this screen for around 5 minutes before shutting down.

    I've reset PRAM - still nothing.

    Safe boot didn't work.

    My next step is to restore from my Time Machine backup--I'm on that screen now--however I want to see what feedback I get first. (Strangely the last backup it lists is June 20 6:43 PM despite backups being done after that point.)

    Anyway... I'd appreciate some help. Thanks.

    Computer specs:
    2007 Alu iMac
    320GB
    4GB
    ATI HD video card
    FW 800 HD attached
    FW 400 HD attached
    Apple Wired Keyboard attached
    iPod Dock attached
     
  2. macrumors 603

    Tomorrow

    Joined:
    Mar 2, 2008
    Location:
    Always a day away
    #2
    Looks like you have a lot of "stuff" connected to it - have you tried booting without the external drives and dock connected?
     
  3. thread starter macrumors 6502a

    Topher15

    Joined:
    Oct 22, 2007
    Location:
    London
    #3
    Yeah tried that.
     
  4. thread starter macrumors 6502a

    Topher15

    Joined:
    Oct 22, 2007
    Location:
    London
    #4
    Update... I restored the system from a Time Machine backup and have now successfully installed the updates that I mention above. I do however notice that it stays on the grey start up screen with the spinning gear for longer than it did before this problem started.

    Anyway, all seems to be okay.
     
  5. macrumors 6502a

    jzuena

    Joined:
    Feb 21, 2007
    Location:
    Burlington, MA, USA
    #5
    Maybe the boot disk has problems so it takes longer to read it? What is the S.M.A.R.T. status for the drive in disk utility? It may also be worth running Onyx or some other utility to get slightly more detailed information on the drive.
     
  6. thread starter macrumors 6502a

    Topher15

    Joined:
    Oct 22, 2007
    Location:
    London
    #6
    S.M.A.R.T status is "Verified." I've also verified and repaired disk permissions. And verified disk also reported no problems.

    I have noticed some freezes since the restore despite only iTunes and some other minor apps running. Firstly iTunes froze mid song (so I did force quit), when I clicked the Get Info button in Finder everything froze but only for about 30 seconds. I do have a feeling that there might be some problem with the HDD but I'll see how it plays out before I take it to the Apple Store to get replaced. (If I do I wonder if they would upgrade it to 500GB... :p :cool:)

    Onyx is currently doing its thing now. EDIT... Onyx says the disk needs to be repaired so I'll try that.
     
  7. macrumors newbie

    POSIXFTW

    Joined:
    Jun 22, 2009
    #7
    some of your problems seem related to a corrupted user account, did you try installing the updates on another account?
     
  8. thread starter macrumors 6502a

    Topher15

    Joined:
    Oct 22, 2007
    Location:
    London
    #8
    Okay still getting this problem. Sometimes I get it to load into the OS, some I don't. Verify/Repair disk states it is a sibling problem. Would this mean it is software related and not a physical problem with the drive? If so, then maybe just erasing the disk will solve it? I'm going to erase the hard drive to see if it fixes it.

    I would like to know if I should erase 298.1 GB WDC... which is at the top of the list in Disk Utility, or should I erase iMac HD which is just below it?

    Are you talking about the package being altered problem?

    I only have my admin account and a guest account, which is never used.
     

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