24" iMac does not boot

I have a 24" white intel iMac that will not boot. When you power it on, it makes it to the grey screen with the round loading indicator - that just goes around and round...
This happened about a month ago so I took the computer to the closest Apple Store and all they did was wipe it clean and reload the system software. This worked fine until yesterday, when the problem started again.
Any ideas out there?
Thanks.

It could be the first signs of a failing drive. Make a bootable backup and then take it back to Apple, their repairs are warranted for 90 days. Insist that they check the drive and the logic board and the power supply.
Let us know how you made out..

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  • IMac Does not boot past Gray Screen

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    Hello,
    I reboot back into Safe Mode and run Disk Utilities and it discovers the same problems listed above with Permissions.
    You can ignore repeated "fixes" it's not really a problem, if it says completed repairs that's all that's needed.
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    One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
    PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
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    If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
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    /Library/LaunchDaemons
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  • IMAC does not boot, only beeps. Video attached

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    Check the ram, if the module has gone bad, has become dislodged or not fully seated in the slot then the iMac will only beep indicating an error and will not startup.
    http://support.apple.com/kb/HT2341
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  • IMac does not boot beyond apple logo - help

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    Please carefully read Apple's Mac OS X: Gray screen appears during startup advice letter for how to troubleshoot this issue.
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  • My iMac does not boot after update!!!

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    Hi all,
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    Message was edited by: StrangePowers

    Strange,
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    Memory Controller: 93 deg. F (34 deg C)

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