If Bluetooth driver is missing or gets removed after a Windows Update, add the legacy driver from the Device Manager, install the correct driver from your manufacturer, etc.
When it comes to used cars, I'm pretty open-minded. In the past four years, I've owned a Lincoln Town Car, Toyota 4Runner, Mazda 3, Mazda Miata, Acura CL Type-S, Lexus LS400, Honda S2000, and Porsche ...