For some reason, my Bluetooth device disappeared from my Macbook Pro. When I clicked on the Bluetooth status and/ or went to check via Systems Preference – Network, it said my Bluetooth device was not installed.
Which was strange because it was working fine just before I shutdown the Mac.
Resetting PRAM and NVRAM
- Locate these keys: Command-Option-P-R keys. You’ll need to press them once you restart your Mac.
- Shut down the computer, and then turn it back on.
- Quickly press and hold the Command-Option-P-R keys before the gray screen appears.
- Continue holding until you hear the startup sound for the second time.
- Then release the keys.