Laptop can’t see second monitor via HDMI

Video card drivers

Unfortunately, a very common situation among novice users is trying to update a driver in the device manager, receiving a message that the most suitable driver has already been installed and then making sure that the driver is really up to date.

In fact, such a message only says that Windows has no other drivers and you may well be told that the driver is installed when “Standard VGA graphics adapter” or “Basic Microsoft video adapter” is displayed in Device Manager (both of these options indicate that that the driver was not found and a standard driver was installed, which can only perform basic functions and usually does not work with multiple monitors).

Therefore, if you have problems connecting a second monitor, I strongly recommend installing the video card driver manually:

  • Download your graphics card driver from NVIDIA (for GeForce), AMD (for Radeon), or Intel (for HD Graphics). For a laptop, you can try to download the driver from the official website of the laptop manufacturer (sometimes they work “more correctly” despite the fact that they are often older).
  • Install this driver. If the installation fails or the driver does not change, try to remove the old video card driver first.
  • Check if the problem was resolved.

Another option related to drivers is possible: the second monitor worked, but, suddenly, it ceased to be detected. This may indicate that Windows has updated the video card driver. Try to go to the device manager, open the properties of your video card and roll back the driver on the “Driver” tab.

Windows does not see the second monitor. why and what to do?

If you connected a second monitor or TV to your laptop or computer via HDMI, Display Port, VGA or DVI, usually everything works right away without the need for any additional settings (except for selecting the display mode on two monitors). However, it sometimes happens that Windows does not see the second monitor and it is not always clear why this is happening and how to fix the situation.

This manual details why the system may not see the second connected monitor, TV or other screen and possible ways to fix the problem. The following assumes that both monitors are guaranteed to work.

Checking the connection and basic parameters of the second display

Before proceeding with any additional, more complex methods of solving the problem, if it is impossible to display an image on a second monitor, I recommend following these simple steps (with a high probability, you have already tried this, but I will remind you for novice users):

  • Recheck that all cable connections on both the monitor and video card end are in order and that the monitor is turned on. Even if you are sure that everything is fine.
  • If you have Windows 10, go to the screen settings (right click on the desktop. screen settings) and in the “Display”. “Multiple displays” section, click “Detect”, perhaps this will help to “see” the second monitor.
  • If you have Windows 7 or 8, go to Display Settings and click Find, Windows may be able to detect the second connected monitor.
  • If you have two monitors displayed in the parameters from step 2 or 3, but there is only one image, make sure that “Show only at 1” or “Show only at 2” is not set in the item “Multiple displays”.
  • If you have a PC and one monitor is connected to a discrete video card (outputs on a separate video card), and the other to an integrated one (outputs on the rear panel, but from the motherboard), if possible, try connecting both monitors to a discrete video card.
  • If you have Windows 10 or 8, you just connected a second monitor, but did not reboot (but only shutdown. connect the monitor. turn on the computer), just reboot, this may work.
  • Open Device Manager. Monitors and check if there are one or two monitors? If two, but one with an error, try deleting it, and then from the menu select “Action”. “Update hardware configuration”.

If all these points have been checked, and no problems were found, we will try additional options to fix the problem.

Note: if adapters, adapters, converters, docking stations, as well as the recently purchased cheapest Chinese cable are used to connect a second monitor, each of them can also be the cause of the problem (a little more about this and some of the nuances in the last section of the article). If possible, try other connection options and see if a second monitor becomes available for display.

Additional information that can help when the second monitor is not detected

In conclusion, some additional nuances that can help you figure out why the second monitor is not visible in Windows:

  • If one monitor is connected to a discrete video card and the other to an integrated one, check if both video cards are visible in the device manager. It happens that the BIOS disables the integrated video adapter if there is a discrete one (but it can be enabled in the BIOS).
  • Check if the second monitor is visible in the proprietary control panel of the video card (for example, in the “NVIDIA Control Panel” in the “Display” section).
  • Some docking stations that connect more than one monitor at once, and with some “special” connection types (for example, AMD Eyefinity), Windows may see multiple monitors as one, and all of them will work (and this will be the default behavior ).
  • When connecting a monitor via USB-C, make sure that it supports connecting monitors (this is not always the case).
  • Some USB-C / Thunderbolt docking stations do not support all devices. This sometimes changes in newer firmware (for example, when using the Dell Thunderbolt Dock, not every computer or laptop works correctly).
  • If you purchased a cable (not an adapter, but a cable) HDMI. VGA, Display Port. VGA to connect a second monitor, then very often they do not work, since they require support for analog output at the digital output from the video card.
  • When using adapters, the following situation is possible: when only the monitor is connected via the adapter, it works properly. When connecting one monitor via an adapter, and the other directly with a cable, only the one connected with the cable is visible. I have guesses why this is happening, but I cannot offer a clear solution to this situation.

If your situation differs from all the proposed options, and your computer or laptop still does not see the monitor, describe in the comments exactly how, to which video card the displays are connected and other details of the problem. perhaps I can help.

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.

Is the graphics card / motherboard ok??

Make sure the video output on the motherboard (for computers with integrated graphics) or video card is working. Connect your primary monitor (the one that most likely works and is recognized by the computer) to the port where you are trying to connect another monitor. Connecting a second monitor to another computer can also help determine the hardware malfunction of the computer.

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.

Does your card support multiple monitors?

The mere presence of two or more ports for connection on a video card does not mean that you can actually connect two or more monitors. Check your motherboard user manual and make sure it supports multiple monitors. First of all, this advice is relevant for very old or the cheapest video card plugs.

It happens that a video card supports displaying an image only on two monitors, so nothing happens when a third monitor is connected. I personally ran into this situation when I was trying to connect two monitors to an old laptop. One was identified through an HDMI cable, but the second was no longer identified through the analog video output. In this case, you need to come to terms with the physical limitations of your computer’s video adapter.

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.

And what about the drivers?

Your system may be running your main monitor through a standard VGA graphics adapter. This is a primitive driver that allows you to render an image on any video card without drivers. He is able to conduct a picture even through damaged video cards. On some computers, these drivers allow you to display the image in a high enough resolution, which makes inexperienced users believe that the driver is installed on the video. In this case, an attempt to connect a second monitor will end in nothing, since the video card simply does not use its capabilities through the software.

  • Press Win X and select Device Manager. Expand the Video adapters branch and see what it says. The model of your video card or the video integrated into the processor should be listed there. If instead you see something like Standard VGA graphics adapter or Basic video adapter Microsfot, then it’s time for you to install the graphics card drivers.
  • If you have a laptop, check the manufacturer’s website and find a driver from the Display category. If you know exactly which video card is installed in the computer, go to the manufacturer’s website and download the latest driver, and then try to reconnect the second monitor.
  • In case the driver is installed, you can try to uninstall and reinstall it. Some tricky bug can provoke a problem, so reinstalling drivers will definitely not be superfluous.
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It’s also worth noting here that there are times when the second monitor worked, but after updating the driver, the video suddenly stopped working. There may be a bug in the new driver that caused the second monitor to disconnect. In this case, roll back the driver to a previous version and see if your problem goes away.

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.

Plugs, cables, connectors

The first thing I would recommend to pay attention to. this is to check the condition of the cable, plug, connectors (adapters, if you use them). Look carefully at the surface of the cable: often, due to the frequent bends, you can find “breaks”, “twists”, etc. Even if the cable looks intact. in such places (inside the cable) copper veins could be damaged.

It will not be superfluous to test this cable with another device. will it work.

The connection / disconnection operation is not recommended to be performed “hot” (ie connect without turning off the devices) method.

Why PC / laptop may not “see” the second monitor, TV

Is HDMI selected correctly in the settings

Modern monitors and TVs often have several HDMI ports (2 ÷ 4). And for this reason, there is often one popular mistake [inattention]: the cable is connected, say, to the HDMI-1 port, and HDMI-2 is indicated in the TV [Input] settings. Of course, no image is transmitted to the screen (TV “waits” for it on another port).

It’s trite, but double-check which port you connected to, and what is indicated in the TV / monitor settings (where to get the “picture” from). See screenshot below.

Please note one point: on some devices, the port markings may be confused. I came across this once when setting up a TV: as it turned out, just put the marking “upside down” on the symmetrical cover. Based on this, try to “click” in the TV / monitor settings all HDMI ports that are available in the settings.

Is the HDMI port burnt out?

The most popular interface for connecting TV / monitors today is the HDMI interface (therefore, it was singled out). Not many people know, but when connected in a “hot” way (ie, without turning off the device). in some cases, the HDMI port may be burned out. In rare cases, not only he burns, but also the mat. pay. This happens, most often, due to the lack of grounding (or due to different ground levels, if the devices are connected to different power sources).

HDMI has melted (a similar case, nevertheless, is rare. Usually, HDMI after combustion looks the same as before. Without external signs)

To prevent this from happening with your devices (to minimize risks), it is enough to follow a series of simple sequence when connecting:

  • first completely turn off your computer (or laptop) and TV (or monitor);
  • disconnect plugs from sockets. If the TV is connected to cable. disable it as well;
  • connect HDMI cable to devices;
  • connect cable TV to your TV (if available);
  • then you can connect the devices to the network and turn them on.

It is also highly recommended to use surge protectors.

HDMI Hot Plugging: Will Port Burn? (why the monitor / TV via HDMI does not work). https://ocomp.info/hot-HDMI-gorit.html

Video driver settings

In this subsection, 2 problems can be distinguished:

  • your video drivers are not installed / updated at all (there are those that were installed on the system along with Windows);
  • in the video driver settings, the “picture” on the second display is disabled.

Windows 10 Won’t Detect Second Monitor. How To Fix [Tutorial]

First, I recommend opening the control panel of your video driver. As a rule, it is enough to use the tray icon (next to the clock), see the screenshot below.

Second option. open the Windows control panel, convert the display to large icons, and find the link to the video driver control panel (Intel graphics setting, as in my example below).

Control Panel. large icons / clickable

If you do not have such configuration links, most likely you do not have the drivers installed. Try to go to the device manager (for this press WinR. And use the command devmgmt.msc). and look at the “Display Adapters” and “Other Devices” tabs. If you have a driver installed on your video card. you should see the name of your adapter if not. something like “Video Controller (VGA Compatible)”, see example below.

Device Manager. on the left, the driver is installed on the video card, on the right. no / Clickable

Note that another situation is not uncommon: the driver can be installed, but the control panel is absent. In this case, you also need to reinstall (update) the video driver.

In the driver control panel, as a rule, you need to open the “Display / multiple displays” section (example for IntelHD video cards) and click the “Find” button (if the PC does not see the second display). In the same section, you can select the display mode, specify the number of active screens, and other parameters.

Intel Control Panel. multiple displays / Clickable

As far as AMD / nVidia video cards are concerned. then everything is the same here. For example, in the nVidia control panel, open the “Display / Multiple Display Setup” section (see screenshot below). There you can also specify which displays will be used, check their configuration, set parameters, etc.

NVidia control panel. multiple display setup / Clickable

Projection settings. Detection

Generally, when connecting a second monitor to a computer / laptop. it automatically transmits the image to both screens (to its own and the second connected one). In this case, usually, a window with a choice of projection will appear on your desktop (i.e. how to work with an image on 2 screens):

  • show the image only on the PC screen;
  • repeat the image on both screens (default option);
  • expand (ie you will have 1 desktop divided into 2 monitors. Convenient when you need a “large” desktop);
  • only the second screen (the image on the laptop / PC screen will be “blanked out”).

The problem may be that instead of the default option (i.e. show the image on both screens), you may have an option set. show only on the PC screen. In this case. the image will not be transmitted to the connected second monitor!

To “manually” bring up this projection panel. press the WinP button combination (and then change the “both screens” projection option). If you have a laptop. pay attention to the function keys: among them there is also additional. options.

I also recommend opening the Windows settings, the “System / Display” section and clicking on the “Detect” button (in some cases, especially if your display is old, this function will help you detect and use it).

The computer / laptop does not see the second monitor or TV (TV): there is no image on it.

I’m trying to connect a second monitor via HDMI to the computer (so that I can work on the main one, and watch TV on the second). But on the second monitor, for some reason, just a black screen (there is no image).

I tested it on another PC. working. Changed drivers, changed OS Windows 7 to Windows 10. zero effect.

Generally, when connected to a computer (laptop) TV or second monitor. usually, the image on it should appear immediately (without unnecessary gestures). In your case, it is very likely that the signal from the PC does not go to the monitor at all (for example, the HDMI cable may be broken, the connectors are “broken” and because of this bad contact, a problem with the video driver, etc.).

Actually, in this article I will try to give all the points that need to be checked in order to restore the operation of the devices (the actions go in steps, something like this and I recommend looking for the reason).

Why the monitor does not work when the computer is turned on?

Why might my computer monitor blink? There is not enough power to the monitor, due to a faulty external or built-in power supply of the monitor itself. Problems in the main board or power board inside the monitor Capacitors are swollen on the monitor board or on the PC motherboard, or they may be swollen on the video card.

Why the computer does not see the monitor?

There may be several reasons why the computer does not see the monitor: connector malfunction, monitor power supply defective, video card defective

What to do if the TV does not show an image but there is sound?

If you do not have an image when connecting, check the cable for kinks, bends, breaks, if there is such damage, you need to replace the HDMI cable. You also need to check the settings and make sure that the computer has not entered sleep mode. Another option is the failure of the connectors.

How to connect a second monitor in Windows 10?

  • Make sure cables are properly connected to new monitors.
  • Choose how the desktop is displayed.
  • Right-click anywhere on the desktop and select Display Settings to open the Display page.

How to set up HDMI cable to TV?

How to connect a TV to a computer via HDMI

  • Connect the cable to the HDMI output of your laptop.
  • Insert the other end of the cable into the HDMI input of your TV.
  • On the remote control of your TV, press the button responsible for selecting the source of the displayed signal.
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What to do if the monitor works but does not show a picture?

The computer turns on but does not display an image on the monitor.

  • Check your monitor.
  • Verify that your PC completes its power on and off cycle.
  • Diagnose the cause by the beep code.
  • Clear CMOS.
  • Make sure the supply voltage switch is in the correct position.
  • Reinstall everything inside your PC.

Why is there no image on the monitor when HDMI is connected??

No picture is displayed from a computer connected to the HDMI input of the TV Select a computer screen resolution that is supported by the TV. If the TV does not support the resolution set on the computer, the image on the screen may be distorted or not displayed at all.

What to do if Windows 10 won’t detect the second screen

The problem due to which the display does not want to turn on can occur regardless of the version of the operating system. There are several ways to eliminate it, which will be discussed below. Each method requires an individual approach and detailed consideration.

On Windows 10, the monitor is not detected due to problems with the converter

As mentioned above, the convector is an adapter from one connector to another. It is needed in cases where the video card does not have a corresponding port for connecting a monitor.

If a user who decides to duplicate the signal from the video card to an additional screen using a converter cannot see the picture on this monitor, then, first of all, it is worth checking the adapter for operability. To do this, you need to insert the signal conversion device into another computer, TV or connect to the adjacent connector to make sure there is an image.

If the user is one hundred percent sure that there is no image on the display due to the adapter, then the device should be replaced, returned under warranty, etc. Most likely, such a converter is not functional.

What to do if HDMI and DisplayPort Problems began to appear

Almost all modern video cards are equipped with these connectors. These ports are designed to output a digital signal, that is, an image to a monitor. If there is no image on the second display connected to the PC, then the user is advised to do the following:

  • Move the HDMI cable to the adjacent connector on the video card. The video adapter has multiple HDMI ports. Therefore, the cable can be easily rearranged into another connector and check if there is a picture on the screen. Perhaps one of the ports went out, which was the reason for the absence of an image on the monitor.
  • Do the same with DisplayPort.
  • Disable the use of the connector integrated into the motherboard in BIOS. This circumstance is relevant if there is no picture, both on the first and on the second monitor. It is possible that only integrated graphics are set in the BIOS and the ports of the video card are disabled, not used.
  • Inspect HDMI and DisplayPort connectors. If they show chips and scratches, then such ports are most likely inoperative.

Important! If the above manipulations did not lead to a positive result, then it is worth trying another method of solving the problem.

Reinstalling the driver on the video adapter

Often the Windows 7 operating system does not see the second monitor due to an outdated video driver. To solve the problem, it is recommended to use the following algorithm:

  • Go to the official website of the manufacturer of your adapter. For example, Nvidia or AMD.
  • Go to the section responsible for software downloads.
  • Select your adapter model from the list provided and the version of the operating system.
  • Download the latest driver.
  • Install the software following the installer prompts.
  • Restart the PC and check if the image appears on the secondary screen.

Note! During the driver update process, the image on the main monitor may disappear for a few seconds. Do not be afraid of this, tk. the picture will be restored in the near future.

Error installing the driver on the video card

Reasons why the problem occurs

Windows ten may not see another monitor connected to a stationary computer or laptop for the following reasons:

  • Incorrect connection. The user can make a mistake when performing the task, for example, by plugging the VGA cable into the port on the motherboard, not into the connector on the video card. The same goes for using the DisplayPort connector.
  • Incorrect computer settings. After connecting the additional screen, the user must perform the initial setting of the parameters. If he does not, then the device will not be identified.
  • Problems with the connection interface, connectors. For example, the VGA, DVI or HDMI cables used to connect are damaged, frayed, or inoperable. In this situation, the wires will need to be replaced.
  • Viral infection of the PC. As one of the reasons for this problem. If the user is unable to synchronize the PC and the second display with each other, then, first of all, it is recommended to check the computer for malicious software.
  • The lack of a driver for the video adapter. Many PC users face this problem. It can be solved in the shortest possible time by downloading the latest driver from the official website of the video card manufacturer and installing it.

FIX: Windows 10 Not Detecting Second Monitor [Quick Tutorial]

Note! The problem can also be caused by damaged connectors on the video card or its physical condition, for example, overheating.

Display 2 not active Windows 10 due to VGA issues

Old-style VGA connector, which is now practically not used either on video cards or on motherboards. However, it can also connect two monitors to one computer. If the video card has only VGA connectors, but at the same time these ports are absent on the monitor, then you should use an adapter, for example, from HDMI to VGA.

If the picture on an additional monitor connected to the VGA connector cannot be displayed, then the user is recommended to do the following:

  • Carefully inspect the port on the cable and on the video card for integrity. If no external damage was found during inspection, then it is worth first checking the cable on another computer, and then the video card. A similar result indicates problems with the VGA connector, or with the video adapter itself.
  • Connect the monitor to the adjacent connector. If there is still no picture on the screen, then the problem is in the video card. In this case, the image should be absent on both displays.
  • Take a close look at the VGA to HDMI adapter. Sometimes you can cope with the problem of the absence of an image on the secondary screen by moving the adapter. It may be coming off the cable or connector.

Additional Information! Previously, VGA to DVI adapters were bundled with Nvidia video cards. Now it will need to be bought separately.

Why Windows 10 does not see the second monitor. ways to fix the problem

Many users connect two monitors to one computer. However, certain problems may arise with the synchronization of these devices. This article will explain why the Windows 10 operating system does not see the second monitor.

Video card problem

Broken video card is another common reason why the TV stopped seeing a laptop or PC. The message “No signal” appeared on the screen, what should I do in such situations? To fix the problem, you need to update the drivers. Finding them on the Internet will not be difficult. You can download the update package from the official website of the GPU processor manufacturer.

You need to start by studying the technical parameters of the video card. The fact is that not all graphics modules support the option to display images on multiple monitors. You can familiarize yourself with such characteristics in the documentation that comes with the video card. If all documents have been lost, then you can use special software.

laptop, second, monitor, hdmi

To update the drivers for the GPU adapter, follow the step-by-step instructions:

  • Go to the control panel.
  • In the “Display” column, select “Small icons”.
  • Go to “Device Manager”.
  • Find the “Display Adapters” tab in Device Manager.
  • Expand the tab to see the available graphics cards.
  • Right click on the video card, and then select “Update driver” from the context menu.
  • The operating system will automatically check for new drivers. Installation takes place in the background.

As noted earlier, you can also download the drivers yourself. Don’t download files from unverified sources. Download updates exclusively from the official portal of the video card manufacturer. Installation is carried out through an automated installer. Therefore, problems should not arise.

Causes of malfunctions and their elimination

Why can’t my computer or laptop see the TV? There are several reasons. Let’s list the most popular ones:

  • the equipment is connected incorrectly;
  • damaged HDMI cable;
  • faulty interface on a PC, laptop or TV;
  • problems with video card drivers;
  • incorrect monitor settings;
  • Incorrect settings on the TV
  • the GPU processor of a computer or laptop is out of order.

Now let’s take a closer look at why the connection of the computer to the TV does not work. The main stages of equipment diagnostics:

  • Assessment of the correctness of the connection diagram and visual inspection of the integrity of the wires.
  • Checking computer and TV settings.
  • Testing the computer operating system for viruses.
  • Port health diagnostics by connecting to other devices.
  • Checking for graphics driver updates.

Now let’s take a closer look at why the TV does not find a PC or laptop. We will offer useful troubleshooting tips.

TV not configured

Some TV models do not have an option to automatically detect the signal source. Especially if TV synchronization with other devices has been previously configured. In situations where, when connected via HDMI, the TV does not see a laptop or computer, take the remote control, and then select the list of available signal sources. From the proposed list, you need to select “HDMI”.

If the signal was not detected automatically when the cable was connected, then you need to do all the work manually. Step-by-step algorithm of actions:

  • One plug of the cable needs to be inserted into the port on the side or back of the TV. The second plug is inserted into the corresponding socket of the PC or laptop.
  • Take the remote control and press the “Source” or “Input” button. The name may vary depending on the model and manufacturer of the TV. When the list of available sources appears on the screen, select “HDMI”.
  • Go to TV settings to select a specific connector. TVs are predominantly equipped with two HDMI inputs. The connector number can be found directly below it. In the settings, select the one into which the cable was inserted. You can switch between ports using special buttons or numbers 8 and 2.
  • To make the changes made to the settings take effect, you need to press the “Enter” or “OK” button on the remote control. If there are no such buttons on the remote control, then just go down in the menu by pressing a little, and then select the “Apply” command. In the English version of the menu, it will be called “Apply”.
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Remote controls for many modern TVs have an HDMI button. This means that you can ignore the second point of this instruction. Just press this key. As a result, it will switch to this signal source. Select the required port beforehand. How to do this is described in the third and fourth paragraphs of the instructions.

If you have any difficulties in the process of selecting a signal source, carefully study the instructions that came with your TV. It describes in detail the process of connecting additional devices using the HDMI connector.

Features of HDMI wires and the main causes of malfunction

HDMI stands for High Definition Multimedia Interface. It is a state-of-the-art connector that transmits audio and video at the same time. Almost all equipment is equipped with this interface. “Tulip” and other cables popular in the past are designed to transmit an analog signal. HDMI cable transmits content in digital content with Full HD or 4K resolution (depending on version).

Therefore, if you need to connect a computer to the TV screen, then it is best to use this particular interface. The connector provides the highest quality data transmission with the lowest latency. Unlike other wires, HDMI transmits sound and picture to TV at the same time.

The HDMI interface was introduced back in 2002. Since that time, the developers have released many different modifications. They gradually increase the carrying capacity of the cord. Developers try to timely add support for popular formats and many other useful features.

HDMI versions over 1.4 support internet signal transmission, 3D and 4K resolution. The HDMI internet connection differs from Wi-Fi wireless technology with increased data transfer speed and a more stable and reliable signal. The most popular HDMI form factors are:

  • type A. classic version;
  • type C. mini HDMI;
  • Type D. micro HDMI.

The last two types are designed to connect mobile phones, cameras and other portable devices. What causes wire breakage? Mainly short circuits and mechanical damage.

Inoperative connection port

Absolutely all connectors are susceptible to mechanical damage and short circuits, as a result of which the contacts burn out. Therefore, inaccuracy of the user or a sudden power surge can also lead to the fact that the PC does not see the TV. Experienced experts strongly advise to connect the HDMI cable only on condition that all equipment is de-energized.

Over time, the HDMI output pad on your computer will oxidize. Because of this, the device does not detect the connection. Contact the service center for qualified engineers to re-solder the damaged contacts, thereby restoring the functionality of the connector.

In some situations, connection problems arise due to the fact that the video card is not equipped with an additional power supply. Therefore, no synchronization takes place. It will be extremely difficult for an ordinary user to check the functionality of the connection. It is extremely important to first analyze the features of the graphics adapter.

Incorrect monitor settings

If there are no problems with signal transmission, then you need to diagnose the settings of the laptop or computer. Very often, the computer does not see the TV via HDMI precisely because of incorrect system parameters. No special knowledge is required for this. It is enough just to follow a simple instruction:

  • Move the mouse over the free space of the screen, and then right-click.
  • In the context menu that appears, select “Screen resolution”. This item is sometimes referred to as “Characteristics”. It all depends on the version of the operating system.
  • Choose the best way to display your picture on a large TV screen. Adhere to the resolution stated in the TV specifications.

The settings panel is much easier to turn on on a laptop. Hold down the FnF4 key combination. Hold this combination until the optimal resolution is automatically determined. As soon as the laptop or PC goes into sleep mode, the image will go blank. Therefore, it is better to turn off automatic sleep in order to establish an uninterrupted connection with the TV.

Broken cable

In situations where the image was transmitted correctly from a laptop connected to a TV, and then the synchronization was interrupted, you need to start by checking the integrity of the cable. The plug may have come off or the wire has been broken. Most of the problems arise precisely because the plug comes off. This could even happen due to the fact that the user just passed by. Mechanical damage to the cord is less common. Cables come in different lengths. Therefore, users have the opportunity to choose the best option for themselves. This eliminates interruptions.

If the laptop is connected to the TV, and there is still no picture, then first check if the plugs are correctly inserted into the connectors. If the TV does not see the HDMI cable from the TV, try a different cable. It cannot be ruled out that connection failures were caused by damage to the wire.

Why the TV does not see the laptop via HDMI and how to solve the problem

Synchronization of the TV and computer allows you to significantly expand the functionality of the equipment. The user will be able to run video games on the big screen, watch movies, series and TV shows. There are several connection methods, but HDMI remains the priority option. In some situations, the computer cannot see the TV via HDMI. What is causing this problem? There are several options. Now we will consider each of them, as well as provide useful recommendations for reconnecting.

What to do if the computer “does not see” the second monitor?

Have you connected a second monitor to your PC, but it refuses to be recognized? The reason for this can be either a cable defect or incorrect OS settings. We will tell you how to find out the reason why your second screen is not detected.

PC “does not see” the second monitor: we check the cable

If the computer does not detect the second monitor after connecting, first of all check if the cable with which you are trying to connect the monitor to your system unit is working properly.

  • Connect your monitor to your computer using a different cable if you have multiple wires for connecting monitors.
  • If the screen worked, then most likely the problem was a malfunction of the second wire, which can be safely disposed of.
  • If the screen, on the other hand, is still not working, the problem may be the video output of your PC or incorrect system settings.

PC “does not see” the second monitor: we check the video output

If your second monitor has different interfaces. check: is it possible to connect it, for example, via HDMI instead of VGA-connector. Alternatively, you can try using other available interfaces on your computer, or try to connect via a VGA-HDMI or DVI-HDMI adapter. The latter option is relevant if the monitor does not have an HDMI connector, but the PC does.

  • Typically, computers are equipped with several video outputs: the most common are VGA, DVI, and HDMI. Try all of them using the appropriate cable types.
  • Attention: you can often find several outputs of the same type on a computer. If you connected your second screen, for example, to the VGA-out, check if there is another one of the same free one. Try swapping the cable to an alternate output and check if the monitor is recognized.
  • If after these manipulations you did not see the picture on the monitor, perhaps the problem lies in the cable connection to the integrated graphics card, which is deactivated by default, since the image from the dedicated card is displayed on the monitor.
  • In the photo, you see exactly such a case: the right connectors belong to the graphics card (highlighted in red), while the left ones belong to the motherboard. Since the integrated video system is deactivated by default in such a situation, you can only get an image from those outputs that the dedicated graphics card offers.

PC “does not see” the second monitor: enable the definition of the second monitor in the system settings

Another reason for the second monitor being unrecognizable may be due to incorrect system settings on your computer. In this case, follow the steps below to pair the second monitor with your computer:

  • Go to the “Control Panel”, select the option “All Control Panel Items | Screen | Screen Resolution “and click the” Define “button
  • Click on the found monitor and select the “Expand these screens” menu item.
  • If you are establishing a connection to a wireless display. click on the “Detect” button and wait for the connection to be established with the monitor.

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