how to shut down Windows 8 step by step:
1. Mouse over in the lower right corner of the screen. Or you can press Windows-C on your keyboard.
2. In the menu that appears, click Settings.
3. Click the Power button, and then click your desired action: Sleep, Shut down, or Update and restart.
So, you got it it.
We have also other method to create Shortcuts To Start Screen, Taskbar And Desktop as below:
The alternative method in consideration involves creating a shortcut with an embedded command to turn off the computer either on Taskbar, Start Screen, Desktop, or any other location of your choice, upon clicking which the shutdown sequence will initiate. For that, navigate to the location where you want to create the shortcut, right-click and go to New > Shortcut.
For location of the new shortcut, enter the following command:
shutdown /s /t 0Click Next, and name the shortcut as Shut Down
Now, should you want to pin it to taskbar, right-click the new shortcut and pin it to taskbar, based on your preference. Afterwards, next time whenever you want to turn off your PC, just click the shortcut, and the shutdown process will immediately begin. Alternatively, if you want these shortcuts on your Start Screen, then simply right click on the shortcut and click on Pin to Start.
You may use various switches with the shutdown command in this scenario for different shutdown types. For instance, /r in place of /s operator will reboot instead of turning off the system, whereas /h would put the computer in hibernation. Playing around with these might give your quicker access to certain commands.