2007 iMac 24" 2.8Ghz won't boot past grey screen

Discussion in 'iMac' started by chrisbicker, Jan 8, 2011.

  1. chrisbicker macrumors newbie

    Joined:
    Sep 7, 2008
    Location:
    UK
    #1
    My iMac won't get past grey screen, I've tried holding down c. I've tried holding cmd+s. I've reset my PRAM etc, I've put back in RAM it came with, and when I turn it on I just get grey screen, apple logo and the spinning thing! Updated it to new snow leopard OSX 10.6.6 and it has a DVD in the drive and I can't even get that out! What can I do???
     
  2. chrisbicker thread starter macrumors newbie

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    Sep 7, 2008
    Location:
    UK
    #2
    Help

    Can anyone help?????? I'm in desperate need of help
     
  3. Killyp macrumors 68040

    Killyp

    Joined:
    Jun 14, 2006
    #3
    Hold down the mouse clicker as soon as you've pushed the power button. Sounds like it's trying to boot of the disk and struggling.

    Holding down the mouse clicker will force it to eject the disk...
     
  4. chrisbicker thread starter macrumors newbie

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    Sep 7, 2008
    Location:
    UK
    #4
    now what?

    now its ejected the DVD and should i turn off and try turning on again? and see what it does then? since ejecting the DVD it has not gone past grey screen (still with apple logo and spining thing)

    i reset my PRAM and my fans are going ten to the doezen (louder than normall) should this change at all?

    is it worth me inserting my SL DVD and see what happens then? if something does happen should i run some sort of diagnostics? if so, what?

    kind regards
     
  5. mikeyfern macrumors member

    Joined:
    Mar 3, 2004
    #5
    Steps I would take:

    Restart your computer and immediately press the c key. The computer will look for a bootable CD or DVD and, if it finds one, will use it as its startup device. (from http://kb.iu.edu/data/ages.html)

    Use the SL install disk to run Disk Utilities. Verify your disk, and check permissions.

    If that doesn't work, DiskWarrior seems to always work for me in terms of bringing "Aaah, gray screen, nothing's happening!" computers back from the dead. http://www.alsoft.com/diskwarrior/
     
  6. Jamsen macrumors newbie

    Joined:
    Feb 16, 2010
    #6
    Whats happening on the grey screen? Does the spinning wheel just spin forever or freeze?
     
  7. chrisbicker thread starter macrumors newbie

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    Sep 7, 2008
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    UK
    #7
    Just spins and spins and then spins some more

    Just spins forever!
     
  8. chrisbicker thread starter macrumors newbie

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    Sep 7, 2008
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    UK
    #8
    Now what?

    Managed to get my iMac to boot from my SL disc and it's currently verifying disc permissions but now what? What steps should I take if it does or doesn't find any problems? I have a recent time machine back up, is it worth erasing the whole HDD and restoring from my last back up?

    Please help asap
     
  9. chrisbicker thread starter macrumors newbie

    Joined:
    Sep 7, 2008
    Location:
    UK
    #9
    anyone???????

    can anyone help? please i'm in dire need of some serious assistance..... i dont want to **** my machine up
     
  10. mikeyfern macrumors member

    Joined:
    Mar 3, 2004
    #10
    I know the feeling. Did DIsk Utility find anything weird with your disk or permissions? Did you try repairing permissions?

    http://support.apple.com/kb/HT1452?viewlocale=en_US

    If you repair permissions, try booting the machine up again. If it starts up normally, great.

    If not, I would look into these steps...

    http://reviews.cnet.com/8301-13727_7-10328550-263.html

    http://docs.info.apple.com/article.html?path=Mac/10.6/en/8177.html

    I know the feeling. It sucks. If you have a good backup, you may just want to start from scratch and reinstall the whole OS. I've had to do it 2-3 times in 11 years of mac ownership.
     
  11. chrisbicker thread starter macrumors newbie

    Joined:
    Sep 7, 2008
    Location:
    UK
    #11
    sorted

    got my SL disc in a repaired my disc permissions etc and i totally wiped my HDD and started a fresh by reinstalling, SL and using my latest TM backup.

    so im getting use of it now, the only thing i'm now worried about is my cooling fans, i previously reset my VRAM and my fans (blowers) seem to be running at their highest, how do i go about resolving this issue?
     
  12. chrisbicker, Jan 12, 2011
    Last edited: Jan 12, 2011

    chrisbicker thread starter macrumors newbie

    Joined:
    Sep 7, 2008
    Location:
    UK
    #13
    all sorted, except

    got it fully working, but only come to realise, MY superdrive will not recognise a CD

    i've put a blank CD into my superdrive but to no avail, and i cant even eject through disk utility


    what does anyone suggest now?

    i really appreciate any and all help
     

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