CREATE YOUR OWN SHUTDOWN AND REBOOT TILES IN WINDOWS 8

Step 1: Right-click on a open area of your desktop, then go to New and select Shortcut.

Step 2: In the location box, type shutdown /p to shut down Windows 8 immediately or shutdown /r /t 0 to reboot Windows 8 immediately. Click Next to continue. 

Step 3: Type a name for your shortcut, then click the Finish button. 

Step 4: Right-click on the shortcut from your desktop and select Pin to Start. 

Step 5: Go back to the Start screen and verify that the new tile appears. 

Now to Shutdown and Reboot your Windows 8, you can just double-click on the desktop shortcut