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Question: Macbook Air doesn't turn on after update and restart

Macbook Air I started the update, window punted up saying that it will update and restart the computer. Aftwr the restart the computer doesn't go back on.

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May 28, 2018 1:15 PM in response to olenafromchateauguay In response to olenafromchateauguay

Install El Capitan or Later from Scratch


If possible backup your files.


  1. Restart the computer. Immediately after the chime hold down the CommandandRkeys until the Apple logo appears. When the Utility Menu appears:
  2. Select Disk Utility from the Utility Menu and click on Continue button.
  3. When Disk Utility loads select the volume (indented entry, usually Macintosh HD) from the Device list.
  4. Click on the Erase icon in Disk Utility's main window. A panel will drop down.
  5. Set the Format type to APFS (SSDs only) or Mac OS Extended (Journaled.)
  6. Click on the Apply button, then wait for the Done button to activate and click on it.
  7. Quit Disk Utility and return to the Utility Menu.
  8. Select Install OS X and click on the Continue button.


This will install the version of OS X you had installed.

May 28, 2018 1:15 PM

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Question: Macbook Air doesn't turn on after update and restart