BeforeDo MonitorCloser

If you want to save energy by turning your monitor off, sometimes it might be impossible due to hardware limitations. For instance, laptops don't include power buttons for their displays.
In this case, you can either set a ridiculously low timeout interval for the screen from Windows' Power Settings section or turn to third-party apps such as BeforeDo MonitorCloser that can help you do this in an easier way.

Turn your monitor off

You can use this application if you want to turn your monitor off without having to press the power button or pull the plug or if you're simply limited by hardware (laptops that don't have power buttons for their displays).
As its name suggests, this application was designed to simply help you do that. Alternatively, you can choose to lock your screen and close your monitor at the same time by selecting the corresponding option from the app.

Portable tool

Since it is portable, you don't need to install BeforeDo MonitorCloser on your computer, as simply unpacking the archive it comes in and launching the executable grants you access to all of its features.
It doesn't create any additional files or folders on your computer, nor does it tamper with any of your Windows registry entries. It can be run from removable storage media such as USB flash drives or external HDDs.

Simplistic interface

Thanks to its rudimentary interface that packs intuitive controls, a broad range of computer users can benefit from its capabilities without any significant effort.
The main screen consists of two radio buttons and a large confirmation button, which you can press after you're satisfied with your decision. Based on your selection, you can either turn your monitor off or lock your screen and turn your monitor.

Turn off your monitor quickly

To wrap it up, if you want a quick way of turning your monitor off without relying on the "Power" button, you can turn to BeforeDo MonitorCloser, since it lets you do that with ease.