Have you ever wanted to hit a shortcut key to turn off the monitor? Sure, you can use the Win+L combination to lock the screen, but that leaves your monitor on… and those of us with multiple monitors find it a pain to hunt down the power buttons all the time.
First we’ll show you how to simply power off the monitor, and then how to both lock and power it off.
Create a Shortcut to Turn Off the Monitor
To create this shortcut, we’ll first need to grab a tiny multi-purpose utility called NirCmd from the great folks over at NirSoft. This Swiss-army knife tool can do an amazing array of tasks, including powering off the monitor. All we really need to do is create a shortcut to it.
Right-click anywhere on the desktop and choose New \ Shortcut
http://www.howtogeek.com/howto/windows-vista/create-a-shortcut-or-hotkey-to-turn-off-the-monitor/