Autoshutdown in no internet connectivity DOS bat

@echo off

:START

ECHO Checking connection, please wait...
::Check for connectivity using PING test.
PING -n 1 www.google.com|find "Reply from " >NUL
IF     ERRORLEVEL 1 goto :FAILURE
TIMEOUT 900
:: If PING successful, then loop.
GOTO :START

::If PING fails, then shutdown after giving the reason.
:FAILURE
echo " Net Gone!! Shutting Down PC!"
SHUTDOWN /s