Turn Off Monitor Using Shortcut or Command-line in Windows

My new C24F390 Samsung Curved monitor has the power button on the rear end, perhaps for aesthetic purposes. I have been using monitors that have controls on the front or underneath the bezel all these years. Now, with the new monitor, I find it a little bit inconvenient to reach out to the button on the backside every time I need to turn off or turn on the display.

Samsung monitor jog buttonMoreover, the only button the Samsung C24F390 monitor has is a JOG Button, a multi-directional button that helps navigate. The JOG button is on the rear left side of the product. The switch can be used to power on, off, move up, down, left or right, and select options on the on-screen display menu.

To turn off this monitor, it takes three button presses: Press the center of the JOG button → (when the on-screen menu appears), press the JOG button downward → press the center.

So, I need a desktop shortcut or hotkey method to turn off the display, so that I no longer need to use the hardware buttons on the monitor. A mouse move or keyboard input should turn on the monitor.

Macbooks come with built-in keyboard shortcuts to turn off display — using Control+Shift+Power or Control+Shift+Media Eject. Windows doesn’t have any such preprogrammed keyboard shortcut to turn off the display.

Here are various programs using which you can turn off the monitor with a desktop shortcut or command-line in Windows.

Turn off Monitor Using Shortcut

Turn off monitor using NirCmd

NirCmd is a multi-purpose command-line automation tool that we have covered many times previously on this website.

nircmd utility

To turn off the monitor(s) using NirCmd, use this command:

nircmd.exe monitor off

nircmd monitor off shortcutCreate a desktop shortcut for the above command-line and assign a hotkey to the shortcut (e.g., Ctrl + Alt + M). You can also pick a neat-looking icon by browsing the shell32.dll or imageres.dll files located in the Windows\System32 folder.

See also: NirCmd Command Reference.

Turn off a specific monitor in a multi-monitor setup

To turn off a particular monitor in a multi-monitor setup, you may try Nirsoft’s ControlMyMonitor utility.  ControlMyMonitor allows you to view and modify the settings of your monitor (Also known as ‘VCP Features’), like brightness, contrast, sharpness, RGB color balance, OSD Language, Input Port (VGA, DVI, HDMI ), and more. You can modify the monitor settings from the GUI and the command-line.

controlmymonitor turn off primary monitor using desktop shortcut

The following command-line turns off the specified monitor (e.g. \\.\DISPLAY1\Monitor0)

ControlMyMonitor.exe /SetValue "\\.\DISPLAY1\Monitor0" D6 2

Editor’s note: After turning off a monitor using the above command-line, I could not turn it back on by setting the value to 1. The only way I could turn on the monitor was to use the monitor power switch.


Turn off monitors Using Wizmo

Wizmo from Gibson Research Corporation is another multi-purpose command-line tool similar to NirCmd.

wizmo from grc



To turn off the monitors using Wizmo, run this command:

wizmo.exe monoff

You can create a desktop shortcut to it and assign a hotkey. This tool also plays short music when turning off the display and turning it on (by mouse or keyboard activity.)


Turn off monitor using PowerShell

If you prefer a native solution to turn off the display rather than a third-party program, you can use a PowerShell command in a batch file.

Open Notepad and copy the following line precisely into Notepad.

powershell (Add-Type '[DllImport(\"user32.dll\")]^public static extern int SendMessage(int hWnd, int hMsg, int wParam, int lParam);' -Name a -Pas)::SendMessage(-1,0x0112,0xF170,2)

powershell monitor off

Save the file with a .bat extension.

Running the above batch file or command will turn off your monitors.


Turn off monitor using AutoHotKey script

If you prefer the AutoHotKey automation tool, you can create a .ahk file with the following contents:

#+m::
Sleep 1000
SendMessage, 0x112, 0xF170, 2,, Program Manager
Return

Place the file in your Startup folder.

Pressing Win + Shift + M turns off the monitor. Moving the mouse will turn it on again.

Automatically turn off the monitor when locking the computer

Whenever we take a short break from our computer, we lock the workstation for security reasons, mostly using the Winkey + L key combo.

However, many of us have the habit of keeping the monitor turned on even when going for a break. Until the display timeout event kicks in and turns off the display, it’s a wastage of electricity and increased wear & tear of the monitor. So, you can configure Windows to automatically turn off the monitor when you lock your computer.

Do you know any other methods to turn off the display? Let’s know your comments.


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Ramesh Srinivasan is passionate about Microsoft technologies and he has been a consecutive ten-time recipient of the Microsoft Most Valuable Professional award in the Windows Shell/Desktop Experience category, from 2003 to 2012. He loves to troubleshoot and write about Windows. Ramesh founded Winhelponline.com in 2005.

5 thoughts on “Turn Off Monitor Using Shortcut or Command-line in Windows”

  1. Using the PowerShell script works, but it opens a Command Prompt window that needs to be manually closed. Is there anyway to change the batch file so that the window closes automatically? Thanks!!

    Reply
  2. I figured it out! If you replace SendMessage with PostMessage, the Command Prompt window will close itself automatically after running the script!!

    Reply

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