1: Right-Click on Desktop and choose new and then shortcut.

2: Type in it shutdown -s -t 10 -c "Warning!!! Your Computer is Invaded and it will format for ever.” 

3: Now complete the Shortcut and Customize it’s Icon by right clicking it , than choosing My computer logo for it.

4: Now rename it as My computer and replace it with My computer on Desktop.

5: Enjoy watching your friend dead with fear!! Hahaha.

How does it Work?

There is nothing to be scared of from it because it only shutdown the computer and have n effect on system