!!GREAT COMPUTER PRANKS !! computer commands using notepad and command prompt

Contest Winner
Picture of !!GREAT COMPUTER PRANKS !! computer commands using notepad and command prompt
In this Instructable i will show you how to make a few pranks on peoples computer using simple commands on notepad and cmd prompt.

Remove these adsRemove these ads by Signing Up

Step 1: Fake warning message

Picture of Fake warning message
Ok first we will start with the easy one, the fake warning message.
This is how to do it:
1.Open note pad
2.Type this in
@echo off
msg * Warning your computer has detected a virus.
msg * To remove the virus click OK or close this box
msg * Your Hard drives are now being formatted
msg * Please wait ...........

3.Save the file as April-fools.BAT
4.Right click on the file and press hidden
5.Go to folder options and click show hidden files
6.Cut the file and place it in the victims Start up folder in the start menu
7.Go back to folder options and click do not show hidden files.

Now what each of the lines you typed in done:
@echo off << this runs the commands in the background so the victim will not see any codes
msg * <<this commands the computer to show a message
msg * hahahah <<this is what the message will display

The results
when the victim starts up there computer the first message will appear, when they click OK the next one will appear and make the victim think there hard drive is being formatted until they get the last message saying APRIL FOOLS.

Now your code should look like the image below:
1-40 of 434Next »
papu4372 months ago
Minecrafter183 months ago

Hah! I wonder if it'd work on my sister's computer...

Minecrafter183 months ago

Hah! I wonder if it'd work on my sister's computer...

Minecrafter183 months ago

Ha! I would do this with my sister's net books, but they can't change their background picture.

Minecrafter183 months ago

Ha! I would do this with my sister's net books, but they can't change their background picture.

lilmak3 months ago


ydoll16 months ago

HAHAHAHA SIMPLY GENIUS... I defenitly use this, THANKS!!!

Jimmy 11 year ago
I only have the option of saving the code in Notepad as a txt file!

Just name it ending with ".bat" (w/out the quotes) and it'll be OK :)

set the name as anything.bat the name has to end with .bat
RedstoneYY6 months ago

How do I paste it into the Start Menu?

samgooman1 year ago
You dont have to start the PC all you need to do is press Ctrl+Alt+Delt start task manager and end program simple worked for me!!
It replicates itself if you delete on it starts again.
patbking8 months ago
awesome sooooooooooooo
i made one
@echo off
start cmd.exe
start mspaint.exe
goto a

made my system BSOD
core 2 duo E8500 3.12ghz
8gb ram
ncortiz1 year ago
You put :START instead of START:
kysinden1 year ago
i just use a small .bat place in the start-up folder

shutdown -r -f
goto a

The goto is purely because on some computers i have tested on it ignored the first 6 or so commands to go though.
It also restarts the shutdown process if they decide to try and stop it
{im evil}
ahardman2 years ago
I'd recommend this much smaller and faster fork bomb:

It will essentially do the same thing, only it will duplicate so rapidly, it is very difficult to kill the process before it takes over the entire system.
They just keep getting smaller and smaller. And I thought my one liner was short (@for /l %%i in (1) do @start). I do like your style though.
kool1zero1 year ago
Make your batch script start a shutdown and use the task scheduler to have a matching "shutdown -a" (which aborts) so you just freak them out and don't mess with their stuff. This also makes a nice option to have super long shutdown lengths (like your computer will shutdown in one hour! Just so they can massively fail at stopping it lol)
WrshpMzshn1 year ago
I usually just run an extra mouse from his USB port to my desk, then watch him. When he moves his mouse I move mine and he starts freaking out.
OSU2 years ago
With Windows 7, type this:
@echo off
echo (Type message here)
echo (Type message here

If you don't put pause after it, the message will just flash.
If you don't put cls, all the previous messages will also show.
I like to hide that file, make a shortcut, and change to the emblem the the yellow shield and exclamation point.
Hope this helps.
nnycapcadet2 years ago
I prefer the ever so funny

start iexplore.exe

at the very end rather than april fools
xenongamer6 years ago
how do you stop it? "when you develop a weapon, you have to develop a counter weapon, and then develop a countewr for that counter weapon"
however, you could put in the file to open a file that would close all the programs on your computer. this would prevent you computer from falling for that exact fork virus, but allow it to atack others because it would be written something like this: @echo off :START start a.bat GOTO START start blackhole.bat in this case blackhole.bat would be written to close all programs (and in the same location as a.bat), where if run on another computer , the program wouldnt be in the same location, it might not have the same name, or it might not exist. for this to work, you would have to put blackhole.bat as hidden
you could probably use the line shutdown -f -t 00 , all programs should close but the computer will stay on
nope, never mind i just tried it, i was logged off and after i logged back in i couldnt connect to the internet, had to do a restert, was quite annoying though and i think if someone doesnt know whats actually happened they would be pretty freaked out about it
hi, wienies!
leid, was meinst du mit wienies bedeuten?
well xenogamer if you have windows then your in luck you have task manger as your counter weapon but if you have something different as an os for your computer you can just download it as freeware considering it's like a program management consle.Aslo with this you can log other people off the computer through task manger without theyre password **)
b4 starting it start another batch "shutdown -l -t 00"
taskkill /IM /F a.bat

And while this prank is nominally harmless, it will crash the system, which can easily cause data corruption on Windows.
you can hold down CTRL+C
dean-101 (author)  xenongamer6 years ago
restart the computer is the only way,
how do you get the freeze computer off to get the immage off?
actually no its not if you are quick enough go to run in the start menu type in the file name like in this case you would type virus.bat -a that shuts down that program
No, control + C should stop it.....
copy stops it?... no, that won't work.

See this page.....also....the break key on your keyboard should do the trick also...
you can stop it by task manager and closeing command prompt
1-40 of 434Next »