MacBook Air 2017 won't start after wrong formatting.

Discussion in 'MacBook Air' started by miyaka_kanzaki, Apr 15, 2018.

  1. miyaka_kanzaki macrumors newbie

    Apr 15, 2018
    My sister bought a macbook air 2017 last month but now she's planning to sell it cause she wanted one with better memory. She tried following the steps on but somewhere along Step 3 number 8 she did something wrong. (She said she erased something) Now, when she restarted the MacBook, it shows a black screen with a stop symbol on it. She's already tried reinstalling OS High Sierra but it does the same thing.
  2. Audit13 macrumors 68040


    Apr 19, 2017
    Toronto, Ontario, Canada
    Is she installing HS from a bootable flash key? Tried Internet recovery?

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