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  1. #1
    Macbook Air wont start after OS Reinstall

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    Macbook Air wont start after OS Reinstall
    I wiped out the hard drive and began the installation process for Mojave on my Macbook Air A1932. During the process I decided to hop in the shower and when I got out the screen was black. I assumed it was still going through install but after 30 minutes nothing happened. Now it won't turn on, no noise coming out of it, I tried resetting SMC but no luck with getting it to turn on.

    Any methods I can try that may work? Apple Stores are closed and I need my computer during these days so sending it in at the moment wouldn't be convenient for me. I have all the tools I need if I have to open it up. I just don't understand how by simply installing an OS it can just brick my laptop like that. Any help would be a blessing.

  2. #2
    Macbook Air wont start after OS Reinstall
    Lifeisabeach's Avatar
    Member Since
    Sep 30, 2007
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    The Republic of Neptune
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    Your Mac's Specs
    27" 2019 iMac
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    Reinstalling macOS shouldn't have bricked your Mac, and I doubt it did. Whatever is going on here may be sheer coincidence. Going by your model ID, you should have a late 2018 model. Since you are getting no signs of life at all, it sounds like a power supply probem (battery, motherboard issue, etc). This may seem like an obvious one, but are you sure it's charged? Here's Apple's troubleshooting steps:
    If your Mac doesn't turn on - Apple Support

    Make sure you have unplugged EVERYTHING from the MacBook. Also review the steps for resetting the SMC to make sure you are doing it correctly for your particular model. Here is the correct way (yours should be one with a T2 chip):

    Notebook computers with the T2 chip

    Before resetting the SMC, try these steps:

    1. Shut down your Mac.
    2. Press and hold the power button for 10 seconds, then release the button.
    3. Wait a few seconds, then press the power button to turn on your Mac.

    If the issue persists, follow these steps to reset the SMC:

    1. Shut down your Mac.
    2. On your built-in keyboard, press and hold all of the following keys. Your Mac might turn on.
      • Control on the left side of your keyboard
      • Option (Alt) on the left side of your keyboard
      • Shift on the right side of your keyboard

    3. Keep holding all three keys for 7 seconds, then press and hold the power button as well. If your Mac is on, it will turn off as you hold the keys.
    4. Keep holding all four keys for another 7 seconds, then release them.
    5. Wait a few seconds, then press the power button to turn on your Mac.


    Please verify and include the exact model/year of your Mac and OS X version number (available from "About This Mac", then "More Info" on the Apple menu).
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    Lifeisabeach - Mac-Forums Member of the Month June 2009, Feb 2012, and March 2013.

  3. #3
    Macbook Air wont start after OS Reinstall
    Rod's Avatar
    Member Since
    Jun 12, 2011
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    Melbourne, Australia and Ubud, Bali, Indonesia
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    2015 MacBook Pro Retina 13" macOSX 10.15.1
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    I always get stuck on the details, or lack of them, so when somebody says, I wiped out the hard drive and started instal of a new OS I want to know how did you do that?
    Did you use the Recovery Partition to reinstall the OS after erasing the HD with Disk Utility? Or did you download the Mojave installer from somewhere else? If so where did you get it from? If you are reinstalling why are you doing that? Did you have a problem prior to this instal?


    Sent from my iPhone using Mac-Forums
    Don't be an April Fool: WORLD BACKUP DAY MARCH 31st

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