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HT3964: Intel-based Macs: Resetting the System Management Controller (SMC)

Learn about Intel-based Macs: Resetting the System Management Controller (SMC)

HT3964 i forced quit lots of applications now my mac wont start up

107 Views 1 Reply Latest reply: Nov 21, 2012 12:57 PM by tjk RSS
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Nov 21, 2012 12:37 PM

I HAVE A WHITE SCREEN WITH APPLE LOGO AND A WHIRING CURSOR

  • tjk Level 7 Level 7 (24,130 points)

    Hi M,

     

    First, hold down the power button for 5-10 seconds to completely shut it down. Then try starting in Safe Mode:

     

    http://support.apple.com/kb/HT1455

    http://support.apple.com/kb/HT1564


    After the Mac is completely shut down, push the power button and immediately after the startup tone, hold down the Shift key. The Shift key should be held as soon as possible after the startup tone but not before.

    Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).

     

    There should be a message that says "Safe Boot." After the Mac is completely booted, try restarting and see if the issue is gone.

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