Go to desktop and right click on it
Select New, and then choose Short-cut from the sub-menu. This will open the Create Short-cut window.
Enter the shutdown command. In the field labeled “Type the location of the item”, enter shutdown /s This will create a shortcut that will shut down the computer after a 30-second default timer. If you want to adjust the timer, add the /t XXX command to the end of the line. XXX represents the number of seconds delay you want prior to shutdown. For example:shutdown /s /t 45 will create a shortcut that shuts down after 45 seconds.
Setting the timer to 0 will shut down the computer immediately after the shortcut is run.
Rename your shortcut. By default the shortcut will be named “shutdown”. You can change the name to whatever you’d like in the next window.
Change the icon. Windows will use the default Program icon for your new short-cut. You can change this by right-clicking on it and selecting Properties. In the Short-cut tab, select Change Icon… This will open a list of available icons. Find one that better matches your shut-down short-cut.
Once the short-cut is complete, you can add it to your Start screen by right-clicking the short-cut and select Pin to Start. This will create a tile on your Start screen that you can click to shut down your computer.