Windows 8 cannot identify newly added USB devices or wireless devices

When Win8 uses wireless devices (such as wireless mouse, wireless keyboard, and other wireless devices), the device cannot be identified after being plugged in.Unknown DeviceThe driver cannot be properly installed on unrecognized USB devices.

 

Cause analysis:
This problem is usually caused by a device failure, a USB interface, orThe system Plug and Play service is disabled.
Solution:

Open Control Panel-administrative tools-services-just enable the Plug and Play services (enable computers to identify and adapt to hardware changes with minimal or no user input. Terminating or disabling this service may cause system instability .), If it is enabled by default, disable it and enable it again.

 

 

Device Manager -- unmount the Unknown Device, unplug the wireless Device, restart the computer, plug in the wireless Device, and install the driver.