"If you don't see the Bluetooth icon, but Bluetooth does appear in Device Manager, try to uninstall the Bluetooth adapter and trigger an automatic reinstall. Here's how:
In the search box on the taskbar, enter device manager, then select Device Manager from the results.
In Device Manager, select Bluetooth. Press and hold (or right-click) the Bluetooth adapter name (which may include the word “radio”), and select Uninstall device.
Select Start , then select Power > Shut down .
After your device shuts down, wait a few seconds, and then turn it back on. Windows will try to reinstall the driver.