The key steps to connecting the second monitor on Windows are as follows: 1. Make sure the cable is correctly connected and matched with the interface, and use the extension device if necessary; 2. Select the display mode through the Win P shortcut keys; 3. Adjust the monitor arrangement, home screen, resolution and direction in the system settings; 4. Check the hardware, update the driver or adjust the BIOS settings when encountering problems. After confirming the hardware connection, you can optimize the dual-screen experience through the system settings.

Connecting a second monitor is actually quite simple on Windows, but for beginners, it may get stuck in some small details. The key point is to confirm that the hardware connection is normal, and then adjust the display mode and arrangement method through system settings.

1. Make sure the hardware is connected correctly

The first step is not to turn on the settings, but to check whether the cable and interface are plugged in properly. Common video interfaces include HDMI, DisplayPort, DVI and VGA, to ensure that your graphics card output and monitor input match and connect with the correct cable.

• If the computer only has one video output port, you can consider using an external graphics card expansion device from USB to HDMI.
• Laptop users can directly connect to external monitors with Thunderbolt or HDMI interface.
• If there is no response after insertion, try to unplug it once. Sometimes poor contact can lead to identification failure.

2. Quickly enable the second monitor

Windows will automatically recognize most monitors. After the connection is successful, a prompt will usually pop up. You can directly select "Extend these displays" or "Copy these displays".

The quick operation methods are as follows:

• Press Win P to quickly call up the projection menu, which has four options:
  • Computer screen only : Turn off external monitor
  • Copy : Both screens display the same content
  • Extension : Expand the desktop to the second screen, most commonly used
  • Second screen only : Only display screen on external monitors

It doesn't matter if you choose the wrong one. You can change it at any time and it will not affect the system operation.

3. Adjust the display settings to make the dual screen more convenient

Enter "Settings>System>Show" and you can see the icons of the two monitors. Here you can make further configuration:

• Arrange monitors : Drag the monitor icon to match the actual physical position so that the mouse moves more naturally.
• Main monitor settings : Set the taskbar, Start menu, and main wallpaper image on the side you want to be the home screen.
• Resolution and zoom : The resolutions of the two monitors are different. Remember to set the appropriate zoom ratio separately, otherwise there will be problems with large text while small.

If you are using a monitor with horizontal and vertical mix (such as one horizontal and one vertical), you should also manually adjust the direction here.

4. What to do if you encounter problems?

Some situations may not be able to be completed in a row. Common problems and solutions are as follows:

• The monitor has no signal : check the cable, change the interface, or restart the Explorer.
• The resolution is incorrect : The latest version of the graphics card driver website is updated, especially for NVIDIA and AMD users.
• Invalid extension : It may be that the independent graphics card output is disabled in the BIOS, especially some notebooks need to switch graphics card mode.
• Color display exception : You can reset the default color management in "Display Adapter Properties".

Basically these are the steps. It seems a bit too much, but most of the time it is used online, the rest is just fine-tuning the settings according to your habits.

The above is the detailed content of How to add a second monitor on Windows?. For more information, please follow other related articles on the PHP Chinese website!