How to hang the disktop that all the icons stop working even the user will not be able to click on it. First step is to goto disktop and close all the appliations. Then press the button of print screen written  as prntscr. Then open paint and paste that picture and save it. Then hide all the folders and remove computer icons and set hat picture as screen saver so tha person who will use that computer/laptop will not be able to open any folder/file. 

Trick........

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