Solve the method of displaying the exclamation mark of the Bluetooth peripheral device under Win8 system.

I use the Win8 system. Now the Bluetooth peripheral device displays the exclamation mark. How can the Bluetooth peripheral device display the exclamation mark in Windows
8? And in the "Device Manager" there is an unmounted "Bluetooth Peripherals" showing the exclamation point or question mark, how to solve it.

Operation steps

1, find the <quo;devices and printers in the "Control Panel";

2, find the Bluetooth device that has been linked in the device & right; right click <;properties>;

3, select “hardware” can see no Installed "Bluetooth Peripherals";;

4, select "Services" and then see the services required by the device, so the service is not installed, Bluetooth is not installed Peripheral devices are caused by the fact that these services are not successfully installed. You can find the Bluetooth driver of your device after installation. Or use the method in the figure below to cancel the service of some functions, and then no longer appear in the device manager.