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HT1379 On trying to reset and restart iMac turns itself off

106 Views 1 Reply Latest reply: Apr 29, 2013 11:52 AM by Eric Root RSS
Pauldhewitt Calculating status...
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Apr 29, 2013 10:41 AM

On trying to restart and reset iMac turns itself off

iMac, Mac OS X (10.6.8)
  • Eric Root Level 6 Level 6 (13,870 points)

    Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.

     

    Isolating an issue by using another user account

     

    If the problem is still there, try booting into the Safe Mode.  Shut down the computer and then power it back up. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart. For each disable/delete, you will need to restart if you don't do them all at once.

                   

    Safe Mode

     

    Safe Mode - About

     

    General information.

     

    Isolating issues in Mac OS X

     

    Troubleshooting Permission Issues

     

     

    Step by Step to Fix Your Mac

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