[Incrediboy]

Try this exe file. Unzip & copy it to whatever folder on main memory. Rename it to PowerOffWarning.exe and set the attributes to Hidden, System, Read Only. After that, copy the exe to Windows directory. If u couldn't copy it cos there is error message, use Total Commander or Resco File Explorer to do the job. After that, u could just press & hold End key to switch between vibrate & sound mode. The nice thing every time u change mode, it will vibrate.