I have Bluetooth headphones, and they were out of battery so I disconnected them. When I tried to reconnect later, they refused, so I tried turning the bluetooth off and on in Windows. When I turned it off, however, the button to turn it back on disappeared:

[![enter image description here](https://i.stack.imgur.com/8lRUX.png)](https://i.stack.imgur.com/8lRUX.png)

Furthermore, the Bluetooth icon disappeared from the "hidden icons" in the task bar.

I went to the Start menu and tried using Cortana to turn it back on, I typed "turn on bluetooth" and after a few seconds it said "Bluetooth is connected", and then another second later it says "Bluetooth setting cannot be changed".

What is happening? How can I get my bluetooth toggle back? Should I try uninstalling the bluetooth driver and letting Windows reinstall it upon startup?

**EDIT:** After restarting my computer, the Bluetooth driver is entirely missing. I will try restarting my computer to see if it reinstalls.

**EDIT 2:** It did not reinstall.

**EDIT 3:** I attempted to install [Intel's drivers](https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjey6i08JfYAhUE4IMKHRoHBpYQFghCMAA&url=https%3A%2F%2Fdownloadcenter.intel.com%2Fdownload%2F27195%2FIntel-Wireless-Bluetooth-for-Windows-10&usg=AOvVaw2oxJbT42EtX8xmHmIvVVDV) but they did not show up in the driver's list. I then realized that there were "hidden drivers" and indeed, the original bluetooth drivers were hidden for some reason. All of them were up to date, but when I viewed their "properties" they displayed "Currently, this hardware device is not connected to the computer. (Code 45)". Should I uninstall them?

**EDIT 4:** As per *Microsoft*'s suggestion, I uninstalled the device drivers and attempted to restart to reinstall them. Nope, no reinstall. My bluetooth drivers are just gone forever now.