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The power switch on MacBook Air 7.2 has a delayed start or have to wait to power on. Help?

The power switch on MacBook Air 7.2 has a delayed start or have to wait to power on. Help?

MacBook Air, iOS 11.2.6

Posted on Feb 22, 2018 7:45 AM

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Question marked as Best reply

Posted on Feb 22, 2018 8:11 AM

try an SMC reset, here's the Apple doc, read through it.


How to know if you need to reset the SMC

These symptoms might mean that an SMC reset is necessary:

  • Your computer's fans run at high speed, even though it isn't under heavy usage and is properly ventilated.
  • The keyboard backlight behaves incorrectly.
  • The status indicator light, if present, behaves incorrectly.
  • Battery indicator lights, if present, behave incorrectly on Mac notebooks with a non-removable battery.
  • The display backlight doesn't respond correctly to ambient light changes.
  • Your Mac doesn't respond when you press the power button.
  • Your Mac notebook doesn't respond properly when you close or open the lid.
  • Your Mac sleeps or shuts down unexpectedly and you can't turn it back on.
  • The battery doesn't charge properly.
  • Your MacBook or MacBook Pro doesn't charge through its built-in USB-C port.
  • Your MacBook or MacBook Pro doesn't recognize external devices that are connected to its built-in USB-C port.
  • The MagSafe power adapter LED, if present, doesn't indicate the correct charging activity.
  • Your Mac performs unusually slowly, even though its CPU isn't under an abnormally heavy load.
  • A Mac that supports target display mode doesn't switch into or out of target display mode as expected, or it switches into or out of target display mode at unexpected times.
  • The illumination around the I/O ports on a Mac Pro (Late 2013) doesn't turn on when you move the computer.

How to reset the System Management Controller (SMC) on your Mac - Apple Support

1 reply
Question marked as Best reply

Feb 22, 2018 8:11 AM in response to ladymattie

try an SMC reset, here's the Apple doc, read through it.


How to know if you need to reset the SMC

These symptoms might mean that an SMC reset is necessary:

  • Your computer's fans run at high speed, even though it isn't under heavy usage and is properly ventilated.
  • The keyboard backlight behaves incorrectly.
  • The status indicator light, if present, behaves incorrectly.
  • Battery indicator lights, if present, behave incorrectly on Mac notebooks with a non-removable battery.
  • The display backlight doesn't respond correctly to ambient light changes.
  • Your Mac doesn't respond when you press the power button.
  • Your Mac notebook doesn't respond properly when you close or open the lid.
  • Your Mac sleeps or shuts down unexpectedly and you can't turn it back on.
  • The battery doesn't charge properly.
  • Your MacBook or MacBook Pro doesn't charge through its built-in USB-C port.
  • Your MacBook or MacBook Pro doesn't recognize external devices that are connected to its built-in USB-C port.
  • The MagSafe power adapter LED, if present, doesn't indicate the correct charging activity.
  • Your Mac performs unusually slowly, even though its CPU isn't under an abnormally heavy load.
  • A Mac that supports target display mode doesn't switch into or out of target display mode as expected, or it switches into or out of target display mode at unexpected times.
  • The illumination around the I/O ports on a Mac Pro (Late 2013) doesn't turn on when you move the computer.

How to reset the System Management Controller (SMC) on your Mac - Apple Support

The power switch on MacBook Air 7.2 has a delayed start or have to wait to power on. Help?

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