.bat files can be quite dangerous to any machine. Creating and opening these files should be done at your own risk. Sending malicious .bat files over the internet is illegal. This video will show you how to make a virus that crashes your computer.
This is a batch file that keeps on opening itself so much that it crashes your computer! Advice do not use on a school netwrk becuase it will crash it and you will be in alot of trouble! :) try it out on ur friends PC. lol