Windows 10 second monitor not detected
Windows 10 second monitor: installation and configuration
The solution of many tasks, especially when working with multimedia applications, monitors of stationary computers, despite the large diagonal and high resolution, require expanding the working space by installing a second monitor. A similar problem occurs when using a laptop whose display performance is inferior to stationary screens.
Installing and configuring a second monitor on a desktop or laptop computer is almost always available, since video cards, as a rule, come with several connectors. Therefore, the second display is purchased in accordance with the type of connector, but adapters are often used.
In Windows 10, the second monitor can be customized with your own settings and adapted to your needs. The article discusses the question of how to set up a second display in this operating system.
After connecting the second monitor to the PC, the screens are likely to be duplicated. At home, this is convenient when the PC is connected to the TV for watching movies when the Screen mirroring function is turned on.
Then the laptop must be configured so that it does not fall asleep.
Press the right mouse button on the desktop. select “Display Options”.
A picture appears in the settings indicating 2 displays turned on in duplicate mode.
If you change the mode to “Expand screens”, then the picture takes a different shape.
Click “Apply”. “Save” and the screens become independent from each other.
Clicking “Define” displays the assignment of the monitors.
If any display is not displayed, then click “Detect”.
The position of the monitors can be changed by dragging and dropping.
If the screen sizes in the picture are different, then dragging and dropping files is carried out only along their lower border.
To drag files across the top of the monitors, you need to align the upper parts of the pictures by dragging the mouse. “Apply”.
If you arrange the pictures one above the other, then dragging the files is carried out from bottom to top.
Changing the text size is usually not required, but applies to the active monitor (Select and move slider).
You can select landscape or portrait orientation for the active monitor. Then you need to change the physical orientation of the screen.
In “Multiple Displays” it is possible to disable one or the other monitor.
Changing the monitor to the main and additional is carried out after it is selected and ticked.
Then the PC desktop will be displayed on this monitor.
In the “Additional parameters” of the screen, the installed functions are duplicated and here you can change the screen resolution.
If you set the same resolution parameters, then the pictures in their settings become the same size.
Despite the fact that the sizes of monitors are different, dragging and dropping files on monitors is carried out the same (in the center, top or bottom border).
On operating systems other than Windows 10, the setup steps are roughly the same. Specific guidance for the latest and earlier versions is available on the Microsoft website.
How to arrange the monitors
After deciding to connect an additional monitor, an idea pops up about how to position them. The specifics of working with a computer and the tasks to be solved leave their mark on this. When an additional screen is connected to the laptop, it is convenient to view some article, making your own notes.
Another example, when watching a video, something important should be noted, so it is enough to pause the video without minimizing the window, and make a corresponding note on another monitor.
To view, for example, a video on a large screen, it is enough to connect a TV to a laptop instead of a second monitor. However, it should be remembered that the TV differs from the PC display in its resolution and is not designed to work with the computer at close range, so a 3-5 m cable is required.
On the other hand, when screens with a minimum pixel response time of 1 ms are used for games, then this parameter for a TV is 40-60 ms. Therefore, the best option would be a device that has a high refresh rate, such as 120, 144 or 240 Hz, which creates a smooth picture. A similar goal on TV is achieved by software, when fake frames are inserted into the original video sequence.
It is obvious from the examples given that even a system with two monitors can have many configurations. Some of the most common display layouts include the following:
Two screens side by side and symmetrically, but if the workplace is in the center, then the side borders of the monitors with which they touch will loom before your eyes. Then the head involuntarily turns slightly to the left or right. The problem is partially alleviated by using a chair with wheels.
One of the displays as the main one is directly in front of the eyes, and the second is on the side as an auxiliary screen. The head, of course, will have to be twisted, but not too often, since on the second display they try to display information that is not always in demand.
The main monitor is in front of your eyes, and the auxiliary monitor is on the side, but rotated 90 degrees. For such manipulations, there are various special racks and mounts. For example, more lines are displayed on a vertical screen, which is convenient for creating a text document.
The option of placing the displays one on top of the other helps to save table space when there is no physical space for the second display. But then you need to mount the device on a wall or stand.
Two monitors are vertical and side by side, but a special stand is required. By the way, some displays are supplied with long stands for vertical rotation.
Setting up a second monitor
An additional monitor or TV, depending on the image quality, can be primary or secondary, which is determined by the type of matrix, resolution and screen diagonal. First of all, to connect it, you must first use the connectors in accordance with their rating. Higher standard connector and interface are used for better display.
The worst is the VGA analog type interface. In terms of quality, the interfaces for connecting monitors have the following hierarchy:
Sometimes after connecting a second monitor and turning on the computer, a message about no signal pops up and the image does not appear, or in the worst case, the device is not detected by the PC. Often in this case, old monitor samples are not automatically detected, which is reported by the system. Then you should select “Start”. “Options”. “System”. “Display”. Change the order of displays and click Discover to have Windows find the device you want.
Advice. If a wireless video adapter is used when connecting a new TV, then first you need to connect to its HDMI port, and then connect the PC to it wirelessly. After that, select “Start” in Windows 10. “Options”. “System”. “Display” and click “Connect to wireless display”.
When the screens are connected by selecting “Start”. “Options”. “System”. “Display”, in the settings first determine their location and which number refers to each of them. To do this, by pressing the “Define” key, look at the numbers that appear for a short time in the lower left corner of each of the displays. To change the position in the preview window, drag the mouse to change the display thumbnails and press the “Apply” key.
The monitor setup process allows you to change the following parameters:
“Color” and “Night Light”. belongs to the shared system, not the dedicated display.
Windows HD Color Settings. helps to adjust the picture quality on the screen with HDR support.
“Scale and markup”. defined for each of the dedicated monitors, but usually the vast majority of options are not required when their resolution is 1920 x 1080.
Resolution and Orientation. the settings are the same as in the previous case for each dedicated display.
Landscape to Portrait orientation is set when one of the monitors is mounted vertically.
“Advanced display settings” and “Graphics settings” refer to graphics in general also for the entire system.
Setting up a second monitor is straightforward. You should only take into account the technical characteristics of the resolution, diagonal and location of each of the screens. By using the different options available, the second monitor can be customized to suit your requirements. When correcting an error, you can always correct the position using the “Display” tab.
In order to quickly switch between display modes, you do not need to open the “Options” every time, but just press the “Win P” key combination and select “Project” from the menu.
in the first and fourth, only the main or additional screen works;
in the second, the picture is duplicated on both displays;
in the third, the beginning of the image on one monitor, and the end on the other.
A specific option is carried out both with the mouse and with the above marked keyboard shortcut according to the principle: one press. one step in the list.
Thus, the installation and configuration of the system: Windows 10. the second monitor does not cause unsolvable problems. The operating system includes the necessary set of parameters, thanks to which the setting of the second monitor becomes available to any user.
P.S. Arising in the process of installing and configuring the second monitor, additions, clarifications, wishes, comments and advice, leave in the comments. I will try to answer them.
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Windows 10 cannot detect the second monitor
Besides the many utilities, a second monitor can be very useful for work. However, in some situations, despite the fact that the second monitor is connected to the system, Windows cannot detect it and perceives a message like. Windows 10 cannot detect the second monitor or Did not find another display. While there may be many reasons, we can narrow it down to just a few. If it is with software, it can probably be traced back to drivers.
Windows 10 cannot detect the second monitor
Before you start, make sure your Windows 10 has all the latest Windows updates, your second monitor hardware is working, and that you’ve configured your dual monitors correctly.
1] Updating the driver software
often than not, Windows’ inability to find a second monitor is due to the graphics card. It cannot detect the second display because the graphics card or graphics card does not have the latest drivers installed. Therefore, you need to update the drivers for your video adapters and monitors you may need to update or reinstall the NVIDIA driver. So update your device drivers and see.
If updating your drivers doesn’t work, you can reinstall them:
- Go to Windows key X key and then select Device Manager.
- Find the one you want in the Device Manager window. If you see a yellow exclamation mark against it, right-click it and select Rollback. to roll back the driver.
- If this option is not available, right-click it and select Remove. Reboot the system.
- Open Device Manager again and select Scan for hardware changes. to install the driver.
2] Defining monitor settings manually.
If your operating system cannot detect another monitor, right-click on Start, select Run, type desk.cpl in the Run box, and press Enter to open display options. Usually the second monitor should be detected automatically, but if not, you can try to manually detect it.
- Press the “Start” button and then on the gear as a symbol to open the Settings app.
- Go to System and on the display tab in the Multiple Displays column click Define. This button helps the OS detect other monitors. or displays, especially if they are older models. You can also connect to wireless display here.
Also make sure the panel below says Expand these displays.
3] Hardware Troubleshooting
- Try replacing the HDMI cable connecting the second monitor. If it works, we know the previous cable was defective.
- Try using a second monitor with a different system. This will help determine if the problem is with the monitor or the underlying system.
- Run the Hardware and Devices troubleshooter and see.
Let us know if you have any other ideas.
Setting up monitors
So, in the paragraph above, it was sorted out how to connect 2 monitors to one PC. But for the multi-monitor configuration to work, the connected screens must be properly configured. The table below will help.
Note: If you need to do the same on a laptop, it doesn’t matter. Most laptops have the required connectors. Most often they are equipped with an HDMI port.
How to connect 2 monitors to a PC setup and software for working with two monitors
Tip: bezel-less displays look perfect when paired.
Note: the video card slots are located horizontally.
The exception is Apple monoblocks. Most of these computers have Thunderbolt on the back. You can easily connect a second monitor to it, you only need an appropriate adapter.
In the case of a PC, the video card must be equipped with connectors of the type:
- Display Port;
Either of these ports allows you to connect 2 monitors. However, it happens that the types of connectors for a video card and screens do not match. In this case, you can advise using an adapter or purchase a cable with different connection interfaces, for example, HDMI-VGA.
Software for working with multiple monitors
Recommended programs for working with multiple monitors:
Multi Wall. software is Russified and you don’t need to buy it. Using the utility, you can set a different desktop wallpaper for each monitor, which is impossible when using classic Windows features. You can stretch the image too. And the user also has the ability to download wallpapers directly from the “window”, automatically install them from a specific site, process images.
Dual Monitor Taskbar 1.21. Like the previous version, it is distributed free of charge, but the Russian-language interface is not provided. The main feature is the creation of a second taskbar on an additional screen, which is a continuation of the main panel. Configuring the layout of windows is another useful feature of the utility.
Dual Monitor Tools 1.8 is a free Russified set of tools that allows you to quickly move windows from one monitor to another. The location can be selected in advance. There is an option to launch applications with the ability to define a monitor to open a specific program.
That’s the end of the quick guide to quickly connecting two monitors to one computer. As you can see from the article, this is not difficult to do if you have a suitable video card. Well, if the ports do not match, it is enough to stock up on the necessary adapters. Setting up a multi-monitor configuration is also easy: it takes about five minutes. and you can use 2 monitors from one PC. And the above software will add comfort.
The computer does not see the second monitor
Working with two or more monitors is very convenient and enjoyable, as you get much more space for your tasks, and in games, monitors can be combined for a more immersive experience.
Connecting a second monitor to a computer is simple and quick in 99% of cases. You plug the monitor into a power outlet, and then to the computer via the appropriate cable (VGA, DVI, HDMI, DisplayPort, Thunderbolt, USB-C) in the appropriate slot and Windows automatically detects the additional monitor. After that, in the System parameters, options are available for expanding, duplicating or displaying the picture on only one of the monitors. If something went wrong during this procedure and the computer does not see the second monitor (or the third, for example), this instruction will tell you a few points to pay attention to. Perhaps some of the tips will help fix the problem.
How do you connect the monitor?
Check if you are connecting your monitor correctly. If your main screen is connected to the video outputs of a discrete video card, the second monitor must also be connected to the second video output of the video card. Connecting to VGA / DVI / HDMI / DiaplayPort / USB-C on the motherboard will not work in this case, since the motherboard BIOS is configured to work with external graphics. over, your processor may even physically lack a video core, which will completely negate the work of video outputs on the motherboard. There is no point in trying to connect a monitor to the motherboard.
The computer does not see the second monitor. how to fix
The reason why your computer refuses to work with the second monitor can be both a software and a hardware problem, and therefore you will have to try different tips one by one. We recommend starting with the simplest tips to help you understand if the second monitor was detected by the system at all. It often happens that Windows sees a second monitor, but it is disabled by software. In this case, enabling it will be enough just to change a few parameters in the settings of your computer.
If connecting the second monitor to the computer did not give any positive results, try simply restarting it. After that, move on to the next tips.
- Open Settings. System. Display and click Discover. Windows will try to find all screens connected to it and activate them. This advice is primarily relevant for older screens that do not support automatic detection.
Is the monitor ok??
Make sure the monitor you are connecting to the computer is working properly. Disconnect the main screen and connect the second one. If the desired result does not exist, try connecting the monitor using a different connector. Modern monitors have multiple connection methods (VGA, HDMI, DVI, DisplayPort, and so on), so try them all if you have the right cables. Try to connect it with the same cable as your main one. Connect the screen to another computer. If it does not start there, then the problem may be hidden in the screen itself.
The cable is connected directly or through an adapter?
Adapters are a very controversial issue. They are used if the video card or monitor does not have the required connector, and changing the cable or screen is not an option. If you are trying to connect a monitor to a video card using an adapter, make sure that the video card supports converters. First of all, it concerns the adapter from digital to analog signal. Modern video cards are not equipped with ports with an analog signal output, so conventional adapters from an analog signal do not work. In this case, you need to buy an active adapter with a converter. On older video cards, DVI connectors include a pin to an analog signal, so it is possible to convert DVI-VGA through a conventional adapter. In newer video cards (Nvidia has abandoned the analog signal in the GeForce 10XX on the Pascal architecture), it is not possible to use such adapters.
Check if your pair of monitors is running in some advanced mode. AMD has EyeFinity technology that combines two screens into one large one. In this case, Windows Settings displays one large wide screen instead of two screens. Try disabling all these software stuff, after which the second screen should work.
Is the cable ok??
Check your cable for physical damage. Make sure that the fastening clips of the cable connectors are tightly tightened (this primarily applies to VGA and DVI cables, which in the overwhelming majority of cases are equipped with tightening screws), and the connector itself is fully inserted.
If you do not see any physical damage to the cable, and all clips are securely in place, you may want to try a different cable. Perhaps the problem is hidden in the bent pins of the connector or other hardware problems invisible to the user’s eye. Often, a thickly different cable solves the problem. When connecting a cable (relevant for DVI and VGA cables), be careful. Always connect in the correct direction, do not rush or use excessive force if the cable resists.
If you are trying to connect your monitor using a USB-C cable, you should make sure that the cable supports video transmission. Not all USB-C cables are created equal. While they all have the same connector, some only support file transfer and charging, while others can carry video or are Thunderbolt compatible. Also your computer must support USB-C signal output.
How to connect to PC?
It is important to connect two monitors to the same video card. If one is connected to an external video card, and the second to an integrated one, this method will not work without special settings and support for the corresponding mode of the motherboard.
Additionally, make sure the connector is securely fastened to the monitor port and PC port. If connecting with a VGA or DVI cable, make sure that the connector is firmly seated in the connector, and that the latches are screwed in so that you cannot loosen.
If you connect a modern display via USB-C, you need the cable to support media signal transmission. This can be found in the specifications for this patch cord. The computer must also support USB-C video transmission technology. Using ordinary USB-3.0 to USB-C adapters, the screen will not display a picture.
Check the ports of the video card with a work monitor and patch cord. Check the connector pins so they are not bent. Visually inspect the connectors on both the video card and the computer. Make sure the cable is completely intact.
Method of Reinstalling Monitors
Ok, if reconnecting your video adapter did not help correct the situation, then let’s try to reinstall the monitors themselves that are currently connected to your system. Go back to the System Utility Task Manager and follow these steps:
- When you are in front of the list of installed equipment, find the “Monitors” section.
- Open this section and find your monitor in the list. Right-click on it and select “Remove device”.
- After your monitor turns off. restart your computer and connect a second monitor to it, if it was not already connected to the system unit, and then the main monitor.
- Then check if your second monitor is displayed in conjunction with the main one.
Method to rollback a driver for a video card to a previous version
Perhaps the problem with detecting the second monitor lies in the driver for the video card that is currently installed on your system. To fix this problem, you can try rolling back your video driver to a previous version. This is done, again, through the Device Manager.
- Go to Device Manager, go to the Video adapters section and find your video card.
- Right-click on it and select “Properties”.
- Go to the “Driver” tab.
- Click on the “Rollback” button.
As soon as the driver rolls back for your computer, try connecting two monitors to it again. If this time everything went fine and you did it, then the matter was definitely in the driver for the video card.
Method Tricks for Laptop Owners
If you are trying to connect a second monitor to a laptop, then we can recommend you to perform a couple of tricks that may help you when connecting a second monitor:
- Try closing your laptop while the monitor is connected (this will make the laptop display temporarily disabled). The second monitor should now be flagged as the main monitor. As soon as you open the laptop, then both displays should work at once.
- Try to enter sleep mode on your computer while a second monitor is connected to your computer, and then wake it up.
Method Reconnecting the video adapter (video card)
Some users claim that a simple reconnection of the video card through the “Device Manager” system utility helped them solve the problem of not displaying the second monitor.
This is done very simply and now we will show you how to do it:
- Right click on Start and select “Device Manager”.
- You will see a list of equipment that is installed and running on your system. Find the “Video adapters” section.
- Find the name of your video card in the list and right-click on it.
- Select “Disable device”.
- Then right click on the driver from your video card again and select “Enable device”.
- Test your second monitor again.
Perhaps your second monitor was diligently not being detected due to the fact that the driver for your video card starts malfunctioning for some reason. This simple procedure to reactivate the device can often remedy the situation.
What to do first?
What if the second monitor connected via HDMI or another port does not work? Most likely, you made the physical connection between the PC and the display correctly, the devices are in working order, but Windows 10 was unable to initially detect the display. Follow a couple of simple tips:
- Restart the computer after connecting (especially if the devices were connected turned on, which is not recommended).
- Click WinI and go to “System”. “Display”.
- In the “Multiple Displays” section, click the “Detect” button.
- If in the same item two displays are displayed or started to be displayed, and the first one is set to the “Show only 1” mode, select the “Duplicate” or “Expand” mode so that the picture also appears on the second screen.
- You can check the driver on the display. Right click on Start and open “Device Manager”. In the “Monitors” section. remove the device for the second and then update the configuration.
- Check if the connected second screen is visible using the graphics card software. If you have a video card from NVIDIA. NVIDIA software control panel, for Intel. Intel Graphics Control Center, for AMD. AMD Catalyst. In the section about monitors, you can check the presence of a second one and configure it there.
- If the connected display does not see the software of the video card to which it is connected, the connection may have been made incorrectly or there is a malfunction in one of the elements. Although unlikely, you can still check the drivers for the video card.
- To do this, update to the latest version using proprietary utilities (for example, NVidia GeForce Experience). Or use Device Manager to remove old and install drivers from Microsoft database.
Next, we will analyze the most popular cases that have not been described in this section.
I also advise you to watch the video about working with multiple monitors in Windows 10:
Is the monitor working?
Power off the computer and dual monitors. Disconnect the first one and reconnect the second one instead. If you use the same cables to connect both screens, then try again through it.
If the computer does not see the second monitor connected via HDMI, try connecting via a patch cord to a different connector (DVI, VGA). Still no? Connect the display to another PC or laptop. If it does not work, it is likely that the monitor itself is not working properly.