1. Android OS Switch to Windows OS

In the Android system, switching to Windows system: Pull down from the upper-right of your device desktop ==>Menu will appear (See below)==> Click "OS switching" , you can quick restart to switch to Windows systems

2. Windows OS Switch to Android OS
1) Click the switching icon (Android icon) on the taskbar of the desktop
2) Click the "OK",it will quick restart and switch to Android system (See below)

If you have not seen the Android icon on the desktop, you may have cancelled the Dual OS switch file, and you need to update the tool to your device, and then it will be OK.

Please check the tool here: http://sharesend.com/xx77nshr