Before I uninstalled the driver for bluetooth as Mr. Winston M from Microsoft instructed above, I think the bluetooth driver was "Intel Centrino Wireless Bluetooth 4.0 + High speed adapter". After I reinstalled the package from your link, the bluetooth driver did NOT come back to Device Manager, which makes me worry a lot.
Right now, there are no yellow banged nodes under Bluetooth which is having Generic Bluetooth Adapter and Microsoft Bluetooth Enumerator (two totally).
Network Adapters:
Bluetooth Device (Personal Area Network)
Bluetooth Device (RFCOMM Protocol TDI)
Intel Centrino Wireless-N 2230
Realtek PCle GBE Family Controller
I hope the problem can be solved soon.
Thank you