Windows 10: the button to turn on BLUETOOTH has VANISHED!

suddenly my headphone is not connected to my Laptop Windows 10 and then I tried to turn it off and back on again but as soon as I turned it off, the button to turn it on is Gone. it says Bluetooth is turned off but how am I suppose to turn it on?

when I checked the device manager surely the Bluetooth was hidden, so I tried to update Bluetooth Device RFCOMM Protocol TDI and restart my laptop and didn't fix it. is there any effective way to fix this problem because I certainly want my laptop to be connected to my headphones, mouth, etc?

:)

 

Bluetooth has vanished completely

Bluetooth has vanished completely on my Asus Vivobook E203NA since the last windows update.

It was there in device manager and devices, then windows updated today and bluetooth has vanished - not just not working but not even listed as an option in devices

 

Turned off bluetooth, now the button is gone.

I bought a Bluetooth dongle (ZEXMTE), worked as I needed, but then I turn off Bluetooth under devices, and now I cannot get it to turn back on.








Ive ran the troubleshooter
The device shows up under device manager (when I unplug and plug it in, it plays the noise but doesnt flash anymore)
Ive tried reinstalling the driver
Made sure Bluetooth services are running

Also tried these steps:
No button for bluetooth in action center - Windows 10 Forums
blutooth not turning on in Windows 10 - Microsoft Community

So I went into the device manager, right clicked, uninstalled the device. When I plugged it back it in, voila its working again.

 

BLUETOOTH VANISHED

I have an HP Envy desktop and the bluetooth icon has vanished. It no longer comes up in the action center and there is no option to turn it on in control panel. In device manager there isn't a Bluetooth option. Troubleshooting
hasn't worked and I need help to fix this,