Simple steps to make your own antivirus

Open your Notepad and paste this given code 

@echo off
title Antivirus
echo Antivirus
echo created by your name
:start
IF EXIST virus.bat goto infected
IF NOT EXIST virus.bat goto clean
cd C:\Windows\system32
:infected
echo WARNING VIRUS DETECTED!
del virus.bat
pause
goto start
:clean
echo System secure!
pause
exit
Now save your file with Computerfreaks.bat and select “All files”