Bluetooth Not Working On Your Mac

I think most of you use Bluetooth on your Mac in some way. It might be for an Apple Mouse, Trackpad, headphones or some other device. Bluetooth is fairly reliable, but on occasion it stops working which can cause no end of problems if it affects an input device you are using. If you are having Bluetooth problems and just for future reference, read this article which lists all kinds of ways to restore your Bluetooth.