Do you know that your computer's power button does a lot more than merely powering on? Aside from its main purpose of powering on your computer it can be used to shut down, make your computer sleep, hibernate, turn-off the monitor or display, and of course, do nothing.

I've created a very short video tutorials for this one, go on, watch how it is done.

To shut down:

To sleep:

To hibernate:

To turn-off the monitor or display:

To do nothing: