How to turn off screen with PowerShell?

Question

I need to be able to turn off my screen instantly manually.

I tried powercfg /change monitor-timeout-ac 0, but looks like setting the value to 0 turns it to never. Values like 0.1 also change it to never.

Is there any way I can set this value to 0 minutes, or is there another command that i can use to turn off my screen manually?

score 6 · Answer 1 · answered Oct 06 '19 at 12:27

(Running this has the side effect of also locking the workstation in Windows 10. You will need to know the password in order to log back in)

Running in 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)

Would be the correct answer in order to turn off the display. Yes, it also turns off the display on a laptop using Powershell (and some .NET C# code)

score 4 · Answer 2 · answered Jun 28 '23 at 08:53

Previous solutions work, but they lock powershell input.

Another approach to keep powershell input alive is using PostMessage instead of SendMessage.

(Add-Type "[DllImport(""user32.dll"")] public static extern int PostMessage(int hWnd, int hMsg, int wParam, int lParam);" -Name "Win32PostMessage" -Namespace Win32Functions -PassThru)::PostMessage(0xffff, 0x0112, 0xF170, 2)

Baptiste D · Answer 3 · 2024-03-21T12:08:18.847

DisplayConfig is the thing to use !

For other people that would find this post here you can find the workaround :

Install DisplayConfig module : PowerShell Gallery | DisplayConfig

Get your display infos (look at monitor ID) : Get-DisplayInfo

You should get something like this :

PS C:\Users\user1> Get-DisplayInfo
DisplayId DisplayName      Active  Primary Position    Mode           ConnectionType  --------- -----------      ------  ------- --------

     1 PHL 272V8          True     True 0 0         1920x1080@74,973 Hz      DisplayPort
     2 Mi Monitor         True    False 1920 0      3440x1440@144 Hz         DisplayPort
     3 Philips UHDTV     False    False 0 0                                         HDMI

You can get a list of commands by using Get-Command -Module DisplayConfig

PS C:\Users\user1> Get-Command -Module DisplayConfig
CommandType     Name                                               Version    Source

Cmdlet          Copy-DisplaySource                                 1.0.5      DisplayConfig
Cmdlet          Disable-Display                                    1.0.5      DisplayConfig
Cmdlet          Disable-DisplayAdvancedColor                       1.0.5      DisplayConfig
Cmdlet          Enable-Display                                     1.0.5      DisplayConfig
Cmdlet          Enable-DisplayAdvancedColor                        1.0.5      DisplayConfig
Cmdlet          Get-DisplayColorInfo                               1.0.5      DisplayConfig
Cmdlet          Get-DisplayConfig                                  1.0.5      DisplayConfig
Cmdlet          Get-DisplayInfo                                    1.0.5      DisplayConfig
Cmdlet          Get-DisplayProfile                                 1.0.5      DisplayConfig
Cmdlet          Get-DisplayScale                                   1.0.5      DisplayConfig
Cmdlet          Set-DisplayPosition                                1.0.5      DisplayConfig
Cmdlet          Set-DisplayPrimary                                 1.0.5      DisplayConfig
Cmdlet          Set-DisplayProfile                                 1.0.5      DisplayConfig
Cmdlet          Set-DisplayRefreshRate                             1.0.5      DisplayConfig
Cmdlet          Set-DisplayResolution                              1.0.5      DisplayConfig
Cmdlet          Set-DisplayRotation                                1.0.5      DisplayConfig
Cmdlet          Set-DisplayScale                                   1.0.5      DisplayConfig
Cmdlet          Undo-DisplayConfigChanges                          1.0.5      DisplayConfig
Cmdlet          Use-DisplayConfig                                  1.0.5      DisplayConfig

To Disable any screen use command Disable-Display [ID]

To Enable any screen use command Enable-Display [ID]

score 0 · Accepted Answer · answered Jan 24 '19 at 23:40

0

From this TechNet scripting page:

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)

answered Jan 24 '19 at 23:40

Doug Deden

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score 0 · Answer 5 · answered Jan 09 '23 at 02:48

Tested on Win10 and working

(Add-Type -MemberDefinition "[DllImport(""user32.dll"")]`npublic static extern int SendMessage(int hWnd, int hMsg, int wParam, int lParam);" -Name "Win32SendMessage" -Namespace Win32Functions -PassThru)::SendMessage(0xffff, 0x0112, 0xF170, 2)

score 0 · Answer 6 · edited Oct 19 '24 at 07:42

this works perfectly,

powershell -command $obj = Add-Type -MemberDefinition '[DllImport(""""user32.dll"""")] public static extern int SendMessage(int hWnd, int hMsg, int wParam, int lParam);' -Name fn -Namespace ns -PassThru; $obj::SendMessage(0xffff, 0x0112, 0xF170, 2)

but after the monitor is turned on PS window remains open. "Tried to add "exit" command, but that didn't work.

Can you help please?

How to turn off screen with PowerShell?

6 Answers6

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