Autoshutdown without additional software

• Click on Start button, then Run... or press Windows Logo+R (if you're using Microsoft Natural Keyboard keys)

• Type shutdown.exe -s -t sss then press the OK button.

• Here sss means time in seconds, for example, if you want your computer automatically stops within 10 minute then the command will be shutdown.exe -s -t 600.

• After the execution, you can cancel this order at any time, simple type shutdown.exe -a in a Run box and press OK. Your command automatic shutdown will remove and your computer will continue working.