Monitor Does Not Work On Computer

To ask why the monitor does not turn on, users do not have to too often. But, if a problem has already arisen, dealing with it can be quite difficult.

Monitor Does Not Work On Computer

And in such a situation, when the computer is left without the main means for displaying information, as much as possible actions should be taken to restore it.

And this can be helped by the study of the signs associated with a device that does not turn on. A flashing light, a system reboot, and even the behavior of the computer itself.

The check will help to find out exactly what the problem is and to help fix it on your own or by contacting the service.

Hardware malfunctions

Despite the fact that it seems to the user that the monitor is not working, and everything is in order with the system unit, most often the problem is in the computer.

In this case, even having handed over the device for repair, you can get an answer that it works quite normally.

And buying a new monitor will generally lead to a waste of money.

So, the main reasons that after pressing the power button nothing is displayed, may be:

  • Malfunction of the power supply of the computer itself;
  • Problems with PC RAM;
  • Problems with the card, with the help of which the system unit and the monitor are connected;
  • The malfunction of the motherboard.
  • And finally, another hardware problem is actually a broken monitor.

The image on the monitor does not turn on.

In each of these cases, it is quite difficult to determine the cause of the malfunction when starting the computer. Especially for a not-too-experienced user who does not encounter such situations.

Nevertheless, there are several methods that can help not only verify what the problem is, but also the degree of its complexity.

As a result, it is possible to determine what is needed to resolve the issue. Is it worth trying to do it on your own or not without a service.

Computer malfunctions

A fairly common reason for the lack of an image on the monitor is the computer that did not turn on for any reason.

This happens, for example, when the power supply of the system unit is out of order or its power is insufficient to support the operability of all systems connected to it (including the card).

It is worth noting that modern gaming graphics cards have power consumption of 150-180 watts, and AMD processors. Up to 70 watts.

And, trying to start a PC with a 300-watt power supply (given the need for energy from the motherboard, hard disk and optical drive), the user reboots the system and the computer does not turn on.

Although the same PSU is perfect for a nettop with a conventional integrated card.

Low power supply

The problem with the main power supply is detected by the inscription on the monitor that precedes its inclusion and its disappearance in just a couple of seconds.

It is solved by replacing this element. A fairly simple procedure that takes several minutes and a new PSU.

If the PC still works, but when you turn on the computer, the built-in speaker gives a signal in the form of a squeak, the memory is faulty.

You can find out that the motherboard is faulty in the same way as with the faulty power supply. The computer just does not turn on, and the indicator on the monitor remains on.

Although to clarify the reasons, most likely, you will have to contact the service. But it should not be returned to the monitor, but to the system unit.

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In addition, you can verify that the fault in the absence of a signal from the monitor lies on the computer, and not on the device that does not turn on, by connecting the monitor to a laptop, a second computer or player.

This test option is ideal for a failed system unit or a misconfigured system.

Since both the player and one more PC will work normally, the problem will have to be solved with the computer itself.


If the user recently disassembled the computer and made some kind of movement of the modules on the motherboard, it is possible that the problem with the monitor is actually in the graphics card.

The card, which was shifted when cleaning the computer from dust, may not work and the monitor, accordingly, will not turn on.

To check the board you have to disassemble the system unit back.

The absence of a result does not necessarily mean that the card is not related to the problem.

You can additionally check it by switching the connecting cable from the monitor to the connector of the second graphics card. On modern PCs, especially gaming PCs, there are two of them. Built-in and discrete.

A normally working display indicates the need to change the card or temporarily use the second one.

Two PC inputs

If there are two cards, the problem occurs when the drivers of these devices conflict. Disabling it will turn off the integrated graphics card in the BIOS.


When the button blinks, but the monitor does not work, we can assume that the reason is in the computer. If the indicator does not light up at all, it is the display.

In extreme cases, even the matrix may be broken. But most often the problem is nutrition.

You can find out if the cause of the breakdown is not a problem with the cord, after checking its connection to the mains. It is recommended to check the operation of the monitor with another cable.

If the lamp still does not light up, the power supply is defective, which should be replaced.

No indication of monitor on

Another common reason, which is already characterized by a burning light bulb, is the lack of communication between the monitor and the computer.

In this case, the processor is working fine (there are no signals, the power supply fan is working), and the indicator indicates power is supplied to the display, but there is still no image.

The connecting cable should be switched to another card and returned again.

If possible, it is recommended that you connect the PC and monitor using a different cord.

Software malfunctions

If the problem is not with the hardware, but on the computer, fixing it is much easier. You will not have to contact either the service or the warranty workshop.

All that is required from the user is to reconfigure the system or update the driver.

Monitor settings

The reason why the display does not work may be lost image settings. For example, an incorrectly set frequency or screen resolution.

You can determine the problem by trying to connect the monitor to another computer, and get rid of it by resetting the settings after entering the system through safe mode, which may require another display.

Display Settings Screen


Incorrectly installed drivers also lead to a lack of image.

Although, at the same time, the monitor will turn on for a while and show at least a startup screen saver for the operating system.

Deal with the problem, going to work in safe mode and updating the driver.

Updating drivers in device manager

Operating system

Displaying the BIOS load when you turn on the computer, and the further disappearance of the image can be caused by serious problems with the operating system.

This situation is caused by viruses that got to the PC from the Internet or from removable media, and other problems with the operation of system files.

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If safe mode or restoring the previous working state of the system does not help, the OS is reinstalled again.

This will take no more than 20-30 minutes, and the monitor will automatically recover.

Although to get some extensions you still have to install new drivers.

Start loading BIOS


Having completed all the checks and trying to fix the problems on their own, in 90% of cases it is possible to achieve positive results and again get a fully functional computer on which you can work, play or play multimedia files.

In those rare cases when the issue is not resolved, you should contact the masters. But even then all the actions performed were not out of place, since with their help it was possible to determine which part of the computing device should be attributed to repair.

Monitor does not work when you turn on the computer

Why might the monitor not turn on? Common causes

The computer turns on, but there is no image on the monitor! Computer repair. Black screen

The computer turns on, all coolers spin, the LEDs and indicators light up, but there is no image on the monitor. No image is not from the card, not from the motherboard. The problem turned out to be a damaged RAM bar.

Once you turn on your computer, and everything seems to be fine, the system unit is running, but the monitor screen does not work. What to do in this situation and how to solve the problem. We will tell you in our article.

First, a few words about the diagnosis. It is very important in this case to determine the nature of the problem. If, when you turn on the computer, the monitor does not react in any way. This means that it does not receive a signal from the computer, if the monitor reacts to turning on the computer, the indicator shows communication with it, then the problem is either in the card or with the monitor itself. If the system itself does not boot, and the BIOS does not appear on the monitor, then the reason is the computer itself.

After such an analysis, proceed to search for the reasons for the lack of an image on the monitor and solve this problem.

Why does the monitor not work?

Further, experts at Masterservis24.Ru will tell you about the most common reasons why the monitor does not turn on or if there is no image on the monitor.

    Lack of monitor power
    First of all, check the power to the monitor. When the monitor is connected to the network. A yellow or red light should be lit on it. Check the plug for connecting the cable to the outlet and connecting the power cable to the monitor itself. You can also try connecting the monitor using a different power cable. If everything is connected and the power light is on, then the problem is not in the power.

Incorrect or poor connection cable
The second most common reason why the computer monitor does not turn on is the incorrectly connected connecting cable between the monitor and the system unit. Check that the cable is connected to that connector, since if you have an integrated card and with it a discrete one, then the cable from the monitor should be connected to the discrete one, it is usually lower.

Along with this, we also recommend that you check the correct connection to the connector itself, for this, remove and reinsert the connection cable, both in the system unit and in the monitor itself. There is a possibility that the connection cable may fail, so try connecting the monitor to a computer using a different cable.

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Settings problem
The reason why the monitor does not work on the computer is a failure in the image settings. This may be due to incorrectly set monitor resolution, frequency, and other settings. To do this, connect the monitor to another connector, or enter through safe mode and reset the monitor.

If you have 2 cards, then make sure that the integrated card is disabled in the BIOS settings.

Problems with the graphics driver
Also, drivers can cause a problem with the lack of an image on the monitor. If you previously uninstalled the driver or installed a new one, or updated it, then as a result of this, the card may start to work incorrectly, including the absence of an image on the monitor. To do this, log into the system through safe mode and completely remove the old card driver and install a new one.

Graphics card issues
A problem with a graphics card can occur not only due to drivers. For example, if you previously cleaned the system unit, then it is possible that you touched the card, and if you removed it, then you inserted it incorrectly. To do this, turn off the computer, remove the card and reinsert it.

If the problem is not resolved, or before that you have not performed any robots in the system unit, then try connecting the card to a different connector on the motherboard, and if there is an integrated one, connect the monitor to it by first pulling out the discrete card to check the monitor itself. It is possible that the card itself has broken.

Monitor issues
We also recommend checking the settings of the monitor itself. In particular, make sure that the type of cable connection used (VGA, DVI or HDMI) is selected in the settings. Also wander around other settings.

It may be that the monitor itself has broken, this also occurs. At the same time, you should not be very upset, because if the monitor does not turn on, then this is not as bad as in the case of problems with the screen matrix.

  • Operating system issues
    In the case when the monitor displays only the BIOS boot, and then does not turn on, while the sound of starting the operating system is reproduced, the problem with the monitor may be in the system itself. Perhaps there was some error or there is a problem in the operation of system files. If before that you installed any programs that change the visual style, then such a conflict can occur. Viruses that block the operation of the operating system itself, as well as the operation of drivers and devices, can lead to such a problem.
  • When the monitor displays the BIOS loading, but after that a black screen appears, and there is no sound to start the OS, then reinstall the system.

    If the monitor does not work even after all the steps taken, then try connecting it to a laptop or player to check its performance. If the monitor works when connected to a player and does not turn on when working with a computer. Then the problem is in the card or in other computer components. If the monitor does not work when connected to another device, bring it in for repair. You can also try connecting another monitor to a computer or a modern TV, if there is an image. The problem is in your monitor, if not. Then look for the problem in the computer accessories.

    We wish you success in solving this problem, and if you didn’t manage to solve it, then our experts will help in this.