HT201150: How to turn on or turn off your Mac
Learn about How to turn on or turn off your Mac
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Sep 17, 2016 8:19 AM in response to mirpierreby Eric Root,Wired or wireless?
Changed the batteries?
Keyboard/Mouse – Troubleshooting Wireless
Bluetooth devices become unresponsive
Bluetooth Interference Sources
Bluetooth Interference Sources (2)
If your Wi-Fi is capable of generating a 5 GHz signal, try that.
Restart the computer holding down the command - option/alt - P - R keys before the gray screen appears. Continue to hold until you hear the startup chime for the second time.