Suddenly iMac does not recognize wireless keyboard.
Keyboard light is on (so batteries are good) but the computer and keyboard are not communicating. I am unable to enter password to log onto computer.
iMac 27″, macOS 10.13
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The following will require any USB keyboard and mouse. If you don’t have them, borrow or buy them, they are inexpensive!
- Connect the USB keyboard and mouse to the computer.
- Open System Preferences – Bluetooth
- Un-pair the wireless keyboard and mouse.
- Turn off Bluetooth
- Restart the computer in Safe Mode per the directions in How to use safe mode on your Mac - Apple Support
- Restart the computer normally.
- Open System Preferences – Bluetooth
- Turn on Bluetooth
- Re-Pair the wireless keyboard and mouse.
- Unplug the USB keyboard and mouse and begin testing the wireless devices again.