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MacOS High Sierra: "The recovery server could not be contacted"

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songokuuu -  
 sam -
Hello,
A week ago I "tried" to reset my MacBook Air because I wanted to restore it to factory settings. So, I followed the steps directly (on the Apple website). Unfortunately, my computer suddenly shut down, and when I turned it back on, there was a folder with a ? flashing. I pressed cmd + R, but when I try to reinstall macOS High Sierra, it says the server cannot be contacted. I have tried all the manipulations (Disk Utility + running..) but nothing works.
I'm not a tech expert at all, and I would like to know if it’s possible to fix this problem by myself. :/
Thank you!

3 answers

  1.
    dede74000 Posted messages 26996 Registration date   Status Contributor Last intervention   5 370
     
    Hello,

    Here is a summary of the keyboard shortcuts, put together by Ritchi, to reinstall/reset/restore/repair Mac OS:

    Restore Mac OS X

    https://support.apple.com/fr-fr/HT201314

    - "Command (⌘) + R" allows you to install the latest version of macOS that was on your Mac.

    - "Option + ⌘ + R" allows you to upgrade to the latest compatible version of macOS for your Mac.

    - "Shift + Option + ⌘ + R" allows you to install the version of macOS that came with your Mac when it was purchased new, or the closest available version.

    Note:
    The key combination must be pressed as soon as the Mac is turned on and held down until the desired effect occurs, namely the appearance of the "macOS Utilities" window.

    © Ritchi

    Cmd + R provides access to Disk Utility, which allows you to repair the hard drive via the SOS menu.

    Best regards

    --
    When it's urgent, it's already too late (Talleyrand)
    When all else fails, read the manual ;)
    2
    1. khrug
       
      Thank you very much for taking the time to reply! I have gone through all of that again, but despite all the changes I've made, I still can't start my computer from a disk, and when I turn it off/restart it, there is still that folder with the question mark :/
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    2. dede74000 Posted messages 26996 Registration date   Status Contributor Last intervention   5 370
       
      If you restart from the recovery partition (recovery HD) while holding down the cmd and R keys, you will reach the utilities window, this one:



      With the choices mentioned, is that the case?

      (do not pay attention to the current boxes)
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    3. Songokuuu Posted messages 1 Status Member
       
      After trying to restart from the recovery partition, another error message appeared: it was simply a matter of resetting the date from "Terminal" and there you go, macOS High Sierra is installing, just have to wait!
      Thank you for your help!!
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