If you are already on Windows 10 Creative Update, there is something that you can do now but couldn’t do before. You can turn the Power Button on your computer into a monitor switch that lets you turn off all your monitors.
Here is how you can set it up
Open Power Options by clicking Start menu, typing Power Options, and click Edit Power Plan.
In the Edit Power Plan Settings window, click Change advanced power settings link.
The Power Options window pops up, find and expand the “Power buttons and Lit” and “Power button action.” Then, select “Turn off the display” from the Settings list.
Click OK, and you are all set.
Now, let’s press the Power Button on your computer and see what happens. It only turns off your monitor and still leaves your computer running. No applications will be closed, and none of the download jobs will be terminated either. If you have multiple monitors set up, it will turn off all your monitors at once.
Note that if you are on an early version of Windows 10 or anything older than Windows 10, you may not see this option available on your computer.