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    Turn monitors on and off

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    • RussR
      Russ
      last edited by Russ

      Turn monitors off:

      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)
      

      Turn monitors on (didn't work for me - see below):

      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,-1)
      

      In my case, the Turn monitors on powershell command didn't work for me. My monitors turned on but then turned right back off for some reason. So instead, I used this script and made this my command line so it effectively presses the Print Scrn button to turn my monitors back on:

      wscript d:\scripts\key.vbs PRTSC
      

      Russell VanderMey

      Rhadson MatiasR 1 Reply Last reply Reply Quote 1
      • Trenton LawsonT
        Trenton Lawson
        last edited by

        @Russ said in Turn monitors on and off:

        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)

        When I try and run the turn monitors off command, it works briefly, but my screen wakes up after maybe three seconds. While my monitors are off my keyboard and mouse flash rapidly at me. Any idea on how to fix this?

        RussR 1 Reply Last reply Reply Quote 0
        • RussR
          Russ @Trenton Lawson
          last edited by

          @Trenton-Lawson unfortunately I think the problem is specific to your hardware.

          Russell VanderMey

          Trenton LawsonT 1 Reply Last reply Reply Quote 0
          • ?
            A Former User
            last edited by A Former User

            I get an error when running the monitor off command:

            PS C:\Windows\System32\WindowsPowerShell\v1.0> 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)
            Add-Type : c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : Unexpected character '\'
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(7) :     {
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : >>>     [DllImport(\"user32.dll\")]^public static extern int
            SendMessage(int hWnd, int hMsg, int wParam, int lParam);
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(9) :
            At line:1 char:13
            + powershell (Add-Type '[DllImport(\"user32.dll\")]^public static exter ...
            +             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                + CategoryInfo          : InvalidData: (Microsoft.Power...peCompilerError:AddTypeCompilerError) [Add-Type], Except
               ion
                + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand
            
            Add-Type : c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : Newline in constant
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(7) :     {
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : >>>     [DllImport(\"user32.dll\")]^public static extern int
            SendMessage(int hWnd, int hMsg, int wParam, int lParam);
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(9) :
            At line:1 char:13
            + powershell (Add-Type '[DllImport(\"user32.dll\")]^public static exter ...
            +             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                + CategoryInfo          : InvalidData: (Microsoft.Power...peCompilerError:AddTypeCompilerError) [Add-Type], Except
               ion
                + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand
            
            Add-Type : c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : Invalid expression term ''
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(7) :     {
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : >>>     [DllImport(\"user32.dll\")]^public static extern int
            SendMessage(int hWnd, int hMsg, int wParam, int lParam);
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(9) :
            At line:1 char:13
            + powershell (Add-Type '[DllImport(\"user32.dll\")]^public static exter ...
            +             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                + CategoryInfo          : InvalidData: (Microsoft.Power...peCompilerError:AddTypeCompilerError) [Add-Type], Except
               ion
                + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand
            
            Add-Type : c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : ) expected
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(7) :     {
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : >>>     [DllImport(\"user32.dll\")]^public static extern int
            SendMessage(int hWnd, int hMsg, int wParam, int lParam);
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(9) :
            At line:1 char:13
            + powershell (Add-Type '[DllImport(\"user32.dll\")]^public static exter ...
            +             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                + CategoryInfo          : InvalidData: (Microsoft.Power...peCompilerError:AddTypeCompilerError) [Add-Type], Except
               ion
                + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand
            
            Add-Type : c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : Invalid token '"user32.dll")]^public stati...' in
            class, struct, or interface member declaration
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(7) :     {
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(8) : >>>     [DllImport(\"user32.dll\")]^public static extern int
            SendMessage(int hWnd, int hMsg, int wParam, int lParam);
            c:\Users\xxx\AppData\Local\Temp\xzybaz5r.0.cs(9) :
            At line:1 char:13
            + powershell (Add-Type '[DllImport(\"user32.dll\")]^public static exter ...
            +             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                + CategoryInfo          : InvalidData: (Microsoft.Power...peCompilerError:AddTypeCompilerError) [Add-Type], Except
               ion
                + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand
            
            Add-Type : Cannot add type. Compilation errors occurred.
            At line:1 char:13
            + powershell (Add-Type '[DllImport(\"user32.dll\")]^public static exter ...
            +             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                + CategoryInfo          : InvalidData: (:) [Add-Type], InvalidOperationException
                + FullyQualifiedErrorId : COMPILER_ERRORS,Microsoft.PowerShell.Commands.AddTypeCommand
            

            (Just a note: I've been using Nircmd to do this, it does the same)

            1 Reply Last reply Reply Quote 0
            • Trenton LawsonT
              Trenton Lawson @Russ
              last edited by

              @Russ Is it possible one of my apps could be preventing it? Such as Wallpaper Engine which creates live wallpapers.

              RussR 1 Reply Last reply Reply Quote 0
              • RussR
                Russ @Trenton Lawson
                last edited by

                @Trenton-Lawson, it's possible because I don't know specifically why it's doing that, but I doubt that's it. It seems more like a hardware problem.

                Russell VanderMey

                Trenton LawsonT 1 Reply Last reply Reply Quote 0
                • Trenton LawsonT
                  Trenton Lawson @Russ
                  last edited by

                  @Russ Any idea on what piece of hardware might be causing the issue? If not no worries

                  RussR 1 Reply Last reply Reply Quote 0
                  • RussR
                    Russ @Trenton Lawson
                    last edited by

                    @Trenton-Lawson, maybe the video card or monitor, but it might even be the motherboard because of what you told me about the keyboard and mouse flashing.

                    Russell VanderMey

                    1 Reply Last reply Reply Quote 0
                    • XanderX
                      Xander
                      last edited by

                      NirCMD (https://www.nirsoft.net/utils/nircmd.html) can do this with a single command: nircmd.exe monitor off

                      1 Reply Last reply Reply Quote 1
                      • R
                        raeyatd
                        last edited by

                        someone help me!!! when I use the command 'wscript d: \ scripts \ key.vbs PRTSC' it says that the script file 'd: \ scripts \ key.vbs' could not be found.

                        R 1 Reply Last reply Reply Quote 0
                        • R
                          raeyatd @raeyatd
                          last edited by

                          @raeyatd said in Turn monitors on and off:

                          someone help me!!! when I use the command 'wscript d: \ scripts \ key.vbs PRTSC' it says that the script file 'd: \ scripts \ key.vbs' could not be found.

                          @Russ please

                          RussR 1 Reply Last reply Reply Quote 0
                          • RussR
                            Russ @raeyatd
                            last edited by

                            @raeyatd, for that to work, you'd need to have a 😧 drive with a scripts folder in the root of it, and you'd need to create the key.vbs file. If you don't have a 😧 drive, you could use your 😄 drive.

                            These are the contents of that key.vbs for quick reference:

                            Dim Wsh
                            Set Wsh = Wscript.CreateObject("Wscript.Shell")
                            Wsh.SendKeys "{" + WScript.Arguments.Item(0) +"}"

                            Russell VanderMey

                            1 Reply Last reply Reply Quote 0
                            • Rhadson MatiasR
                              Rhadson Matias @Russ
                              last edited by

                              @Russ

                              I have more than one monitor, can you choose which one to turn off?

                              RussR 1 Reply Last reply Reply Quote 0
                              • RussR
                                Russ @Rhadson Matias
                                last edited by Russ

                                @Rhadson-Matias, I don't know of any tools that can turn specific monitors off. I'll have to do some research.

                                At first I thought you were asking if you can shutdown a second computer. For that you could say something like this:

                                Alexa, turn off power on laptop.

                                Power is the voice word for the command on the computer with laptop as its voice word.

                                Russell VanderMey

                                S 1 Reply Last reply Reply Quote 0
                                • S
                                  SniperVB @Russ
                                  last edited by

                                  @Russ Hii, did you find a way to turn a specific monitor off? Or at least just a second screen?

                                  1 Reply Last reply Reply Quote 0
                                  • XanderX
                                    Xander
                                    last edited by

                                    "Enable/disable/configure multiple monitors on Windows"
                                    https://www.nirsoft.net/utils/multi_monitor_tool.html

                                    MultiMonitorTool.exe /disable \.\DISPLAY3

                                    And, for single monitors, my comment from a year ago still works.

                                    1 Reply Last reply Reply Quote 3
                                    • Fernando Montes VázquezF
                                      Fernando Montes Vázquez
                                      last edited by

                                      This post is deleted!
                                      1 Reply Last reply Reply Quote 0
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