Is there a way to turn off the display in Windows (7), preferably without using additional software?
Powershell script works fine, but leaves command-line window after turning on the display.
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On a laptop you can use the keyboard shortcut combination of Fn+F7 (F7 might differ depending on the laptop model) and for a desktop you can always use the power button.
Do you need any other specifications such as wake up on mouse movement or something else?
You can always create a shortcut and assign a keyboard shortcut to a black screensaver, use this path:
This will not turn off you screen but make it completely black
You can use WinAPI call
SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, 2) where
HWND_BROADCAST = 0xFFFF,
WM_SYSCOMMAND = 0x0112 and
SC_MONITORPOWER = 0xF170. The
2 means the display is being shut off.
There are several ways to make the call:
Separate executable. You can fire it through a script, command line, Run window, shortcut (
*.lnk), etc. Note that shortcuts can be invoked using a keyboard shortcut. The executable may be written in C or C++, or via P/Invoke in .NET languages (C# or PowerShell), or in many other languages that have a foreign language interface (e.g. JNI in Java).
AutoHotkey script. For a non-programmer, this way is probably simpler. Making customizations still requires some scripting. This script turns monitor off on Win + M:
#m:: Sleep 1000 SendMessage, 0x112, 0xF170, 2,, Program Manager return
Note the timeout before the
SendMessage call in the AutoHotkey script. It gives the user a chance to release keys (in case their release would wake up the monitor again). Do not forget about it even when making the call from a script in another language.
For more info, see the documentation of
WM_SYSCOMMAND message and AutoHotkey
SendMessage. It might be of interest that since Windows 8, using the same method to turn monitor on does not work, but there is a work-around.