In this case, the bluetooth driver can be updated, and this can cause the bluetooth toggle to disappear. Windows Update might be installed automatically without your knowledge. Method 4: Enable Bluetooth Support Service Method 2: Uninstall and reinstall the bluetooth drivers You can try the below methods one by one, then the problem should resolve. What to do to fix this issue? Not to worry. When checking in Settings, you found no option to turn on or off bluetooth. You can’t use your bluetooth devices properly in Windows 10.