A white circle with a diagonal line appears when I turn on my Mac book air

A white circle with a diagonal line appears when I try to start.

If that's what you see, follow the instructions from Apple:

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    Bring her back. It's new, it's at the shop for sorting or replace it, not you to try to fix it.

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    "Deep" wrote in the new message: * e-mail address is removed from the privacy... *

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