I swear to god Microsoft intentionally makes bluetooth drivers break to force Windows updates. This has happened too many times to be a co-incidence. I'll just be sitting there when suddenly my headphones cut out. I check quick settings, bluetooth ha disappeared. Check settings proper, can't connect to anything. Go to device manager, Bluetooth is hidden. Restart the computer, even reset the drivers by pulling the power cable - nothing. Still gone. Then I remember Microsoft's fuckery and check Windows update and what do you know, there's an update waiting to install. And then when I install the fucking thing, suddenly my bluetooth is back.