bruciegoosie
Level 1 (0 points)

Q: Electricity tripped and now Mac won't start up

The electricity tripped while my Mac was in use. When the electricity came back on, I tried to switch back on Mac but all that happened was it chimed and stayed on a grey screen with the apple logo and timer going around and around as if it is loading. Any suggestions?

iMac, iOS 5.1.1

Posted on Jun 5, 2015 1:57 AM

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bruciegoosie

Q: Electricity tripped and now Mac won't start up

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  • by thunderzzz,

    thunderzzz thunderzzz Jun 5, 2015 1:59 AM in response to bruciegoosie
    Level 6 (8,379 points)
    Notebooks
    Jun 5, 2015 1:59 AM in response to bruciegoosie

    Follow these steps:


    Restart your Mac with the Shift button pressed.


    - Shut down your Mac

    - Wait until your computer turns off and after that press the Power button

    - Right after you hear the startup tone, press and hold the Shift key

    - Release the Shift key when you see a grey Apple sign and the progress bar below this sign

    - Once you see Desktop, start a Disk Utility scan to detect and repair file system errors (don't forget to choose your main hard drive)

    - Click on Verify Disc and then, if asked to fix problems, on Repair Disk

    - After this, click on Verify Disk Permissions and then on Repair Disk Permissions

    - After the process is finished, shut down your Mac and turn it back on after about 30 seconds


    Apart from that, take a look at this Apple article and follow the instructions on Resetting NVRAM shown there: How to Reset NVRAM on your Mac - Apple Support


    Take a look at the steps suggested by Apple in this article:

    https://support.apple.com/en-us/HT204267


    Hope this helps