Win8.1 the solution of the USB connection device is not recognized

Small make up here to share is about Win8.1 can't recognize USB connection device solution, according to some use Win8.1 system users reflect, when plug in the USB mouse and keyboard, the system is not normal recognition.

Failure phenomenon:

The computer prompts cannot recognize, enters the device Manager to discover the error prompt: Unknown Device.

Reason Analysis:

This problem is usually caused by device failure, USB interface, or system Plug and Play service being shut down.

Solution:

1, first click on "Control Panel"---"Management tools"---"Services";

2, open Plug and play service (so that the computer can be very little or no input in the case to identify and adapt to hardware changes. Terminating or disabling this service can cause system instability);

3, if the default is open, please prohibit, and then open again;

4, then open the Device Manager, uninstall unknown device equipment, unplug the wireless equipment, restart the computer, and then plug in the wireless equipment, installation drive, it can be.