Bluetooth disappeared in my Boot Camp Windows 10

Bluetooth worked fine just a week ago. But today it just disappeared and can not be swithed on. In the Windows settings, the Bluetooth switch vanished. Usually there will be a Bluetooth icon on the right corner of taskbar, it also disappeared.

I downloaded a driver management software and repaired the Bluetooth driver (the management software did say that my bluetooth driver was comprised), it still stays the same. Then I boot into the macOS, the Bluetooth function works just fine.

How can I find my Bluetooth back?