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Are you having trouble with setting up dual monitors on your Windows computer? Some online meeting and screen sharing software prioritize screen order over screen settings, causing you to accidentally share the wrong screen. Although you can set either screen as the main screen, you cannot switch the codes “1” and “2” without changing the settings. This article will show you how to adjust Windows settings to change the order of screens on your computer.
Steps
Change home screen
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Right-click any space on the screen. Right-click a location where there are no apps, programs, or icons on the home screen. You will see a menu here.
- Apply this when you use two monitors and want to change their positions to choose the second monitor as the main screen.
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Click Display settings . This is the option below the currently displayed menu, right next to the desktop icon.
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Click and drag the screen to arrange in the order you want. Each screen is numbered in this window. You probably want the display to be similar to where the screen is located. For example, if monitor 1 is a laptop monitor, and monitor 2 is an external monitor placed on the left side of the laptop, you need to drag monitor 2 to the left of monitor 1. [1] X Trusted Source Microsoft Support Go to source
- If you’re not sure what each monitor displays, click one, and then select Identify . This is numbered “1” or “2” in the lower left corner of each screen.
- If you don’t want to change it, just click Apply to save it.
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Click on the monitor that you want to select as the main display. This is the screen selection operation.
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Scroll down and click the check box next to the “Make this my main display” option. 
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. This is the option under “Multiple displays”. [2] X Research Source
- If this box is checked, that screen has been selected as the main screen.
- To choose another monitor as your primary display, you’ll click on it at the top, then check the box next to “Make this my main display”.
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Click Apply . This button is below the check box. This is to apply the new settings and change the screen.
Change the screen number
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Disconnect all monitors, except the main one. To change the monitor number on a Windows computer, you need to change the connection port of each monitor. However, connecting the monitor to another port is not enough – you must remove the registry key associated with the monitor number so that Windows can recognize the new monitor order. [3] X Research Sources Before you open the editing tool, disconnect all screens that are not selected as the primary monitor.
- For example, if you’re using a laptop connected to a power outlet, keep the laptop’s connection intact and disconnect the external monitor.
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Open Registry Editor. To open Registry Editor, type regedit in the Windows search bar, and then click Registry Editor in the search results.
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Go to HKEY_LOCAL_MACHINESystemCurrentContrpSetContrpGraphicsDrivers . A simple way to do this is to copy the address, paste it into the address bar above the Registry Editor, and then press Enter . Another option is to access by following these steps:
- Double-click HKEY_LOCAL_MACHINE in the left pane.
- Double-click the System folder below.
- Double-click the CurrentContrpSet folder below.
- Double-click the Contrp folder below.
- Double-click the GraphicsDrivers folder below.
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Rename the “Configuration” key to Configuration.pd . The purpose of this is to delete the key, but renaming it can help you recover the information in case something goes wrong. Proceed as follows:
- Right click on the “Configuration” folder in the left pane.
- Click Rename .
- Enter Configuration.pd .
- Press Enter .
- If problems occur (which is not usually the case), you can always return here and rename the new folder “Configuration.pd” to “Configuration” to restore the previous settings.
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Rename the “Connectivity” key to Connectivity.pd . Proceed as follows:
- Right-click the Connectivity folder in the left pane.
- Right click on Rename .
- Enter Connectivity.pd .
- Press Enter .
- Similar to the previous step, if you have problems with the setup, you can return here and rename the new folder “Connectivity.pd” to “Connectivity” to restore the settings.
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Turn off the Windows computer. Do not restart the machine – you need to turn off the power. To do this, click the Windows Start menu, click the power icon in the lower left corner, and then select Shut down . Perform the next step when the computer is powered off.
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Connect only the monitor you select as the monitor 1. It is important to remember that this computer must be connected to the main video port on the computer. If you have a multiport display card, connect to the first port. If the display port is built-in to the motherboard, it’s usually the main (monitor 1) port. [4] X Research Sources
- If you use a laptop, the built-in monitor is always monitor 1.
- If you have multiple display cards, there’s no way to help you identify your home screen more effectively than trying the reverse order.
- Don’t rush to connect a second monitor right now.
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Open Computer. You just need to press the power button on the laptop or case. Turn on the screen if you have previously turned it off.
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Right-click on the screen and select Display settings . This is to open the monitor settings window.
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Connect the second monitor. Windows will automatically recognize the monitor and install the necessary drivers. Once the display is recognized, you will see two displays under the heading “Multiple displays” in the right pane. Now monitor #1 is the one connected to the main port. Monitor #2 is the last connected monitor. If you connect one more monitor, it will be screen number 3, etc.
- If you don’t see a second (and/or third) monitor in the Display Settings window, click the Detect button under “Multiple displays” to identify the display right away.
- Windows will automatically regenerate the registry information you renamed earlier, so you don’t need to go back to the registry.
X
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 92,189 times.
Are you having trouble with setting up dual monitors on your Windows computer? Some online meeting and screen sharing software prioritize screen order over screen settings, causing you to accidentally share the wrong screen. Although you can set either screen as the main screen, you cannot switch the codes “1” and “2” without changing the settings. This article will show you how to adjust Windows settings to change the order of screens on your computer.
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