|Hi, maybe you can try these steps:|
1) To open the Taskbar and Start Menu Properties dialog window, click the Start button, then Run. Now type into the Run box, or the Start Search box:
control.exe /name Microsoft.TaskbarAndStartMenu
… and hit enter.
2) Once the Taskbar and Start Menu Properties dialog window is open click on the Notification Area tab. Check the Network box, and click OK.
Your Network icon should now be back in the System Tray.