Signing in after sleep mode
when my new mac book air has been in sleep mode it requires an administrator password. I don’t have one. How do I fix this?
MacBook Air 13″, macOS 13.4
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At initial start up, when you went through the setup routine for your new Mac, you created a password. The default is an admin password.
If you didn't have the setup screen at initial start up, you don't have a new Mac. You have a used Mac and it wasn't properly prepared for resale and it still needs the prior owner's admin password.
This is what should have been done: What to do before you sell, give away, trade in, or recycle your Mac - Apple Support
If you paid for a new Mac, and had no setup routine, you need to return the Mac for a refund.