Jeffrey Lee Li

Jeffrey Lee Li

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diagnostic of MacBook

19
AI-generated summary
To initiate diagnostics, first shut down the device. Then, press and hold the power button until the boot options screen appears. Next, press and hold Command+D until the diagnostic screen is displayed. **Tips:** - Follow on-screen prompts while holding the keys. - Connect the power adapter beforehand to complete all tests. - Have a pair of headphones ready. - Disconnect any Bluetooth mouse before powering on.
  • shutdown first
  • press and hold power button, until boot options screen
  • press and hold Command+D, until diagnostic screen

tips:

  • there are prompt texts when holding
  • connect power adapter ahead, or else, some tests cannot be completed
  • prepare a pair of headphones
  • disconnect bluetooth mouse before power on
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