At first আপনার নোটপ্যাড খুলুন ,and প্রদত্ত কোডটি পেস্ট করুন @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

Now first open your Notepad and paste below code in it. @echo off title Antivirus echo Antivirus echo created by your name :start if exist virus.bat goto infected cd C:\Windows\system32 if not exist virus.bat