macOS User Guide
- Welcome
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- Work across devices using Continuity
- Use iPhone as a webcam
- Use iPhone with Desk View
- Stream audio and video with AirPlay
- Use one keyboard and mouse to control Mac and iPad
- Hand off between devices
- Unlock your Mac with Apple Watch
- Make and receive phone calls on your Mac
- Sync music, books, and more between devices
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- What is Family Sharing?
- Set up Family Sharing
- Add a user or group
- Set up Screen Time for a child
- Share purchases with your family
- Watch and listen together with SharePlay
- Share a Photo Library
- Collaborate on projects
- Find content shared with you
- Find your family and friends
- Play games with your friends
- Resources for your Mac
- Resources for your Apple devices
- Copyright
If your Mac doesn’t turn on
If your computer won’t turn on, make sure the cables are connected and you plugged it into a working power outlet.
Check power and cables: Make sure the power cord is plugged into the computer and into a functioning power outlet. If you’re using a MagSafe power adapter, the adapter light glows amber if the battery is being charged, and glows green when the battery is fully charged. Be sure to use the power adapter that came with your computer or a compatible replacement adapter. See the Apple Support article Identify your Mac power adapter.
If that doesn’t work, try another power cord or power adapter to test whether the problem is with the power supply or the computer itself.
Try other solutions: If you already checked the power and cables, there are other solutions you can try. See the Apple Support article If your Mac doesn’t turn on.
If you still can’t start up your Mac, it may need to be serviced. See Find out how to service or repair your Mac.