PAUSE OFF

Disable display doesn’t cause any damage to ur computer but yes u can make ur friend surprised by doing this.When he will see his PC/LAPTOP drives are gone.                 
To make this happen Go to:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
Now in the rirht side create a DWORD value name it NoDrives.Set the value to 3FFFFFF (Hexadecimal)
Press ok.Then refresh it using F5.Wait for some seconds and guess what ur drives are gone.

To get: Ur drives back.

Delete the DWORD file.
Then Press F5.Wait for some seconds as windows will set the display.It will take time.

In this way You get ur drives back.

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