Monitor Does Not Work Light Blinks

The computer turns on but the monitor does not work. solution

Today I will talk about what to do if the computer turns on and the monitor does not work. Actually, a couple of days ago, looking at the night, I thought: “What a wonderful monitor I have, it is almost six years old, and it has never broken.” In the morning, the monitor did NOT turn on # 128577;

Those. Even the power-on lamp did NOT light up on the monitor. Naturally, the first thing I did was test the power cable by plugging in the monitor through a different cable. Alas, this did not work. the monitor showed no signs of power. I took a screwdriver in my hands, I unscrewed a couple of screws on the back cover of the monitor, and, just in case, reconnected it to the power supply. The monitor worked! However, he again refused to turn on the next morning.

In principle, there are two versions of the fact that the monitor turns on the monitor every other time:

  • Poor contact inside the monitor;
  • The problem with electrolytic capacitors of the monitor power supply.

Actually, I had to disassemble the monitor, namely the LG Flatron L1917S (Do not pay too much attention to the brand and model of the monitor, as such malfunctions occur in different monitors). Having unscrewed five screws on the back cover, I carefully began to “unfasten” the case latches. On the Internet, I found a recommendation that it is convenient to use a plastic card for this, so as not to damage the monitor case. Since u did not dare to use his Sberbank card, he used a screwdriver.

Actually, inside modern LCD monitors, there are not so many spill boards, so it is NOT difficult to find a rogue with a power supply unit, since it has a connector for connecting a power cable.

It took a couple of seconds to identify the cause of the malfunction, so it was perfectly visible that one of the electrolytic capacitors (1000 μF x 16 V) of the monitor power supply swelled.

Monitor Does Not Work Light Blinks

One of the power supply’s electrolytically swollen capacitors

The slightest swelling of an electrolytic capacitor, as a rule, leads to the fact that its capacity decreases sharply, which leads to increased ripple of the rectified voltage. Since modern computer technology is very sensitive to power supply deviations, it simply does not turn on. Thus, protection is triggered, which prevents more serious damage.

Conclusion: any swollen electrolytic capacitor must be replaced, whether it is a monitor power supply, or, for example, a computer motherboard.

When replacing capacitors, it is necessary to install a capacitor whose capacity and voltage are not less than the “native” one. You can not pay much attention to the manufacturer. I found a suitable capacitor in a faulty power supply from the system unit. On the photo below is a “native” capacitor from SAMXON, above is a capacitor from HEC. The capacitance and voltage of both capacitors are the same.

Below is the “native” capacitor. The capacitance and voltage of both capacitors are the same

Well, actually, after soldering the capacitor, it remains only to assemble the monitor. It is desirable that after assembly, and there are no “extra” screws # 128578;


The fault may be in the monitor, card, or the motherboard is faulty. Your monitor and card can be checked on another PC (as a friend), then it will become clear what the malfunction is.

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The monitor beeps and does not turn on

Monitor no sounds ever and DO NOT signal alarms and malfunctions like that. only the system unit beeps. If the squeak comes from the monitor. the road immediately only to the service. Any squeak warns of problems:

  • It happens that the computer itself beeps, and the monitor does not turn on. So the system warns that there are failures in the hardware, often in the adapter. It is advised to get it out, dust it off and reinsert it tightly. If this does not help, you should connect it to a working PC and test if the display is functioning, connect another tested card to your computer for the test. If it’s not about the adapter, then there will be nothing left to do but replace the motherboard or RAM. The display itself is easy to test by connecting it to a working PC.
  • If the monitor itself emits a low high-frequency squeak, it is most likely that it has problems in the power supply or lamp backlight inverter, such repairs are made only in the workshop.

The monitor does not turn on. Indicator is off

If the monitor does not turn on and does NOT give out “All signal”, you need to do the following:

  • Press the power button. she’s probably disabled.
  • Make sure the device is plugged into an outlet. Test it itself. try to power it through, for example, a lamp.
  • Check the power cable, try another.
  • If the indicator still does NOT light up, the monitor must be taken to the service center. it is definitely broken.

The monitor does NOT turn on immediately

If the monitor does not turn on for a long time when the computer starts up, or the picture appears slowly, flickers a little, then the malfunction most likely lies in the hardware of the monitor itself, the defect will progress, and the monitor will soon fail completely. Shortly before a complete breakdown, the monitor may turn off spontaneously, emitting a strange characteristic squeak or the smell of burnt plastic. If the monitor is NOT handed over to the service immediately, then after a complete failure, the cost of repair will increase significantly, or even it will not be restored at all.

The monitor turns on but does not show

If the computer turns on and the monitor still does not work and displays a black screen, it is advisable to try to reset the BIOS settings. It is necessary to turn off the system unit, open its cover. On the motherboard, you need to find a round flat battery that powers the BIOS, pull it out for a couple of minutes and then insert it into place. Often this method helps if the computer and display are working, but the screen is still dark when turned on.

Another reason why the image is not visible is a malfunction of the LCD display in the backlight part. There are two options (in both cases, you need to contact the service for repairs):

  • Failure of the voltage inverter board, which is responsible for supplying voltage to the backlight.
  • The backlight lamps themselves are out of order: if one or several lamps fail, the display automation turns off the backlight and the image on it is practically invisible, but it is there and is poorly visible.

Monitor does not turn on when I turn on the computer

If the monitor does not turn on when the computer starts up, first you need to make sure that the device itself is working. see if the button is pressed “Power” on the panel and whether the indicator is on. Sometimes users turn off the display and forget about it, and at the next session they think that the device is broken. It is not difficult to test the performance of the monitor:

  • It is necessary to disconnect its cord from the system unit and leave only a 220 V cable.
  • Press the “Power” button.
  • In the working device, the light should be on, not blinking, and the “All signal” entry will appear on the screen.

The monitor does not turn on. what reasons can cause the absence of an image?

It is sometimes difficult to find the reason why the monitor does not turn on, because the processes involved in displaying the picture on the screen are interconnected and are located in completely different parts of the computer. There are several common problems that can arise in this situation.

New monitor won’t turn on

If the power of the monitor, which is just purchased, does not turn on, difficulty may arise due to the following:

  • The cable is not connected correctly. Modern adapters have several built-in connectors to which the display is connected. white DVI, blue VGA, the newest is HDMI. For normal connection, the required cord must be inserted into the Corresponding connector carefully, until it fully enters the grooves. The shape of the socket will tell you how to connect them. Then you need to tighten two screws clockwise.
  • Often monitors with multiple ports can only receive a signal from one of them. Use only VGA or DVI connection.
  • After connecting on the display through the menu, you need to reset the settings and make settings in the new equipment.
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Why does not the monitor turn on?

To decide what to do if the monitor does not turn on and to correct the situation, you need to determine the cause of the problem. The missing image is related to:

  • With a breakdown of the device itself.
  • Defective motherboard, adapter, connecting cables.
  • Incorrect driver installation.
  • Incorrect setting of system parameters.

Monitor does not turn on after sleep mode

It is unpleasant when the monitor goes into sleep mode and then does not turn on when you press any button on the keyboard. The problem is often software:

  • Incorrect configuration of sleep mode or hibernation mode, incorrect versions of adapter drivers are installed, you need to update them with new ones.
  • The monitor often does not turn on after hibernation when the Windows system is damaged. You need to roll it back, or completely reinstall this operating system.

map. the likely reason why the monitor is not showing an image

There remains one more option and, most likely, it will be correct. the card burned out. True, the probability of this breakdown is not so high. Maybe, of course, the map is whole. But in this case, the matter is already somewhat more serious. you need to change the motherboard itself.

How to check the card? Remove it from the slot, check the contacts and reinsert it.

If you have a second computer at hand that supports the card being tested, insert it there and turn it on. If the computer boots up normally, then the problem is not with her. If nothing happened, change the card. This option is acceptable only if you have at hand where to check the map.

If not, then a master is needed. In general, if you have a gaming computer, and you strongly “strain” the card, then it is recommended to periodically diagnose it so that it does not fly at the most inopportune moment. There are a number of programs for diagnostics, among which one of the most popular is FurMark

The monitor does not turn on when the computer starts up. What to do if the monitor does not show an image, but the light is blinking and the computer is working

Today we will analyze a situation when you turned on your computer, the processor started working, but the monitor remained black. This is, of course, not pleasant. Some people have a feeling of panic that everything, the computer “flew”, needs repair or, in general, they will have to buy a new one.

Who else has NOT encountered a similar problem, Do not rush to despair. Not everything is lost. Of course, one cannot do without repair or acquisition here, but the scale is not as serious as it might seem at first glance.

There can be several reasons for this problem. But, conventionally, they can be divided into two categories: either the problem is in the monitor, or in the processor itself (but here anything can be).

How to check the monitor for performance?

So let’s start with the monitor. It is very easy to check its performance. Disconnect from the system unit and connect to a regular power supply. We turn on the monitor. The power light is on, the screen says “there are connections or check the cable.”.

If you don’t see this, try pressing the menu button. If again there are no results, then the monitor can only be thrown away and go for a new one. But if you saw all these inscriptions, then you are in luck with the monitor. But no luck with something else. But with what, we will look further.

The first thing to do is the standard procedure for any failure. resetting BIOS settings. Most often, after this procedure, many problems are solved. In order to perform this operation, I turn off the computer completely, even from the network. Next, we open the processor and find a round battery on the motherboard.

We take it out for a couple of minutes, then insert it back and turn on the computer.

If after that nothing came of it, we inspect and check the entire unit. First of all, we check all contacts. Especially the RAM. It often happens that it is because of her that the computer may NOT turn on. We take out the memory modules. We examine their contacts, if necessary, then clean. You can clean them gently with an eraser. We put it back. We check the cable contacts, which connects the monitor to the processor.

Clean the entire processor from dust. Slots where memory is inserted, fans. They are generally very clogged with dust. We check the connection of the card. We also take out and clean.

We remove the power supply. It clogs up very heavily with dust. Therefore, it must be opened and carefully cleaned.

So, we checked everything, cleaned it up. And nothing works. The processor fan seems to be buzzing. it turns on. But the monitor screen is still black.

Read also:

The computer does not turn on. What to do? (Solutions for problems with starting (loading) computer, monitor and noisy fan)

How to clean up junk and speed up your computer? (We make the work of a computer or laptop fast and clear)

Now, let’s look at the common causes of monitor problems.

Checking the power supply

Well, the last thing to be checked is the power supply.

For this, we will also need a working power supply. We open the computer, disconnecting all the connectors of the tested power supply from the motherboard and connect the worker instead. After that, turn on the computer. If everything worked, then the reason is in the power supply. If nothing happened, then the problem is in the motherboard and you will need to change it.

Here, in general terms, a scheme for checking the performance of both the computer itself and its SEPARATE elements.

If, when you turn on the computer, the monitor does not turn on, but the indicator blinks. Advice, if you turned on the computer, and it either did not turn on, or the monitor did not light up, turn it on again and carefully listen to how it hums and how many times it “beeps”.

By the number of Pisks, you can determine the error code. There are a lot of descriptions of THESE codes everywhere, and it will not be difficult to find them.

Why the monitor won’t turn on and what to do?

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.

To begin with, it is worth saying a few words about diagnostics. It is very important in this case to determine the nature of the problem. If, when the computer is turned on, the monitor does not react in any way, then this means that it does NOT receive a signal from the computer, but if the monitor responds to turning on the computer, the indicator shows a connection with it, then the problem is either in the card or with the monitor itself. If the system itself does not boot, while the BIOS loading is not displayed on the monitor, then the reason is in the operation of the computer itself.

After such analysis, proceed to finding the reasons for the absence of an image on the monitor and solving this problem.

Why the monitor does not work?

Further, the experts of the website will tell you about the most common reasons why the monitor does not turn on or there are images on the monitor.

    Lack of monitor power
    Check the mains supply to the monitor first. When the monitor is connected to the network. there should be a yellow or red light on it. Check the plug of the cable to the outlet and the connection of the power cable to the monitor itself. You can also try connecting your monitor with a second power cable. If everything is connected and the power light is on, then the problem is not in the power supply.

Wrong or bad connection cable
Second The most common prerequisite for why the computer monitor does not turn on is an 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 a discrete card with it, then the cable from the monitor must be connected to the discrete one, it is usually located below.

Along with this, we recommend that you also check the correctness of the connection to the connector itself, for this, remove and re-insert the connection cable, both in the system unit and in the monitor itself. There is a possibility that the connecting cable may be damaged, so try connecting the monitor to your computer with a second cable.

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 the incorrectly set monitor resolution, frequency, and other settings. To do this, connect the monitor to the second connector, or enter through safe mode and Reset the monitor settings.

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

Card driver problems
Drivers can also cause a problem with the absence of an image on the monitor. If you previously uninstalled the driver or installed a new one, or updated it, as a result, 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.

Map problems
The problem with the card can arise Not only because of the drivers. For example, if you have previously cleaned the system unit, then it is possible that you have touched the card, and if you removed it, you inserted it incorrectly. To do this, turn off the computer, remove the card and reinsert it.

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If the problem is not solved, or before that you did not carry out any work in the system unit, then try to connect the card to another connector of the motherboard, and if there is an integrated one, Connect the monitor to it, having previously pulled out the discrete card to check the monitor itself. It is possible that the card itself is broken.

Monitor problems
We also recommend checking the settings of the monitor itself. Specifically, make sure to select the Type of cable connection used (VGA, DVI or HDMI) in the settings. Also wander through other settings.

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

  • Operating system problems
    In the case when the monitor displays only the BIOS loading, and then does not turn on, while the operating system startup sound is played, then the problem with the monitor may lie in the system itself. There may be an error or there may be a problem with the system files. If before that you installed any programs that change the visual style, then because of this such a conflict may occur. Viruses can also lead to such a problem, which block the operation of the operating system itself, as well as the operation of drivers and devices.
  • When the monitor displays the BIOS loading, but after that a black screen appears, and there is no OS startup sound, then reinstall the system.

    If the monitor does not work even after all the actions performed, then try connecting it to a laptop or player to check its performance. If the monitor works when connected to the player and does not turn on when working with a computer. then the problem is in the card or in other components of the computer. If, when connected to a second device, the monitor does not work, take it for repair. You can also try to connect 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 components.

    We wish you success in solving this problem, and if you did not manage to solve it, then our experts will help you with this.

    Why the monitor does not turn on when the PC starts: Possible causes, solutions

    If the monitor does not turn on when the computer starts up, the reasons may vary. Not only beginners, but also experienced users may find themselves in a state of stupor, got into a similar situation. What to do? How to identify the source of the problem and fix it?

    Monitor is NOT to blame!

    No matter how strange it may sound, in 9 cases out of 10 the screen has nothing to do with breakdown. It continues to work, the power button may flash, as if the device is in standby mode. But the image is NOT displayed on the display, instead the inscription is visible: “Vs signal” (No Signal). This indicates that data is NOT coming from the system unit.

    What should be done first? Be sure to check the connection. One end of the VGA / DVI / HDMI cable may have fallen out of the socket. Or maybe someone with intentions decided to harm you and pulled out the cord. Alas, this happens too.

    Other common reasons why the monitor does not turn on when the computer starts are listed below:

    • The PC power supply is damaged (it does not work at all or its voltage is not enough to meet the needs of the system);
    • Defective RAM;
    • The adapter is out of order (clogging of the contacts is also possible)
    • The chipset is “covered”. A rare and very sad situation;
    • The problem is really in the monitor.

    This is all good of course, but I’m sure you are more interested in specific steps to eliminate the defect. Here you need to show special attention to detail, since you have to accurately identify the source. And any signals that the computer will give will help in this. Now let’s move on to Detailed analysis of solutions.

    We recommend:

    Diagnostics and “treatment

    The fact is that there are situations when the system does not start immediately, but takes a long time to “think”. But then (after 2-3 minutes) the picture appears on the screen, the download continues. Therefore, it makes sense to wait a bit. If the screen says “Vs signal” and nothing happens for several minutes, you should go to active actions.

    You do not need to immediately remove the case cover and look for a breakage with your eyes. First you need to narrow down the “circle of suspects”:

    • You can exclude the monitor from the list of reasons in a simple way: Connect it to the second “system unit”, a laptop. If the image appears, then we continue to look for a malfunction inside the PC.
    • Press the power button on the system unit. Have you heard a characteristic squeak, which was earlier during normal PC startup? If nothing happened, then the problem is definitely inside the computer.
    • Check the ribbon cable that connects the hard drive to the chipset. Both ends Must fit snugly into the slots. When doing this, LOOK at the power cable connected to the HDD.
    • Pay attention to the noise of the fan installed on the power supply. Is he present or not? If only silence, no hum, then the power supply unit is inoperative. But there is another, very commonplace reason: someone unplugged the power cord or pulled it out of the computer. If there is a power supply button on the back of the case, it is also worth checking.
    • If your motherboard has an integrated card, try connecting to it. Suddenly the monitor “comes to life”, then the defect is associated with a discrete adapter. You should remove the cover and see if the cooler rotates on it (if any). Perhaps the board has moved a little or the contacts are dirty. gently pull it out of the slot, clean the contacts with cotton wool soaked in alcohol (or a regular eraser). Did not help? So the graphic card needs repair / replacement.
    • Often, the monitor blinks or does not work during computer startup due to the RAM modules installed on the motherboard. Maybe one of them “burned out” or moved a little, the contacts are clogged. You need to pull it out, try to swap the planks in places, clean them with an eraser, as in the case of the card (see above).

    I am sure that you were able to identify and eliminate the trouble. Is the monitor working? Share your story in the comments. If the steps listed in the instructions did not help, it is likely that you will have to carry the computer to the service, since you are dealing with a hardware malfunction. At home, without special tools and experience, it is better not to take any action.

    Monitor repair: does not turn on, the light is flashing. 28

    I have an Acer x223W monitor (more precisely x223WSD or WSDR with HDCP), worked well for about 10 years (/. 2 years).
    Usually when you press the power button “light bulb” indicator shines in blue and after 1-2 seconds the Acer logo was displayed on the screen and the image of the worker appeared, but recently, when turned on, the button (indicator light) flashes orange and the monitor did not turn on, this could go on for up to half an hour and then all- did turn on.

    I started looking for info on the Internet, found it on YouTube for repairs, read various articles and realized that the problem is in the capacitors. they are NOT eternal, over time they swell or explode.

    Having disassembled the monitor (barely), disconnected the stand, unscrewed the mounting caps for the stand, unscrewed 4 fastening screws, disconnected, there was another screw under the mount and everything else was latched.

    I found a plastic card I didn’t need, started to snap it off “frame ”, the map did not cope in all places, because There was no suitable plastic tool for such work (in order to damage the plastic less) I periodically used a knife, detaching the frame from the display, the display (matrix) did not want to detach from the back wall, I thought there was another screw, but there is, the wall is just tight ” sucked “to the power supply cover.

    Having detached the display with the unit from the back cover (with a little effort), I noticed that there was nothing more to unscrew, the power supply was glued to aluminum tape, peeled it off, disconnected 4 two-pin connectors from the monitor backlight lamps, for convenience, you can disconnect the loop leading to the matrix from the power supply (like me the first time), there were 2 boards in the dashboard, the 1st is larger, the 2nd is smaller, I unscrewed both.

    I started examining capacitors. this is the main problem why the monitor does not turn on and the button (indicator) is blinking, immediately noticed on the first. a large board one capacitor is slightly swollen, I assumed that the problem was in it (judging by the result, of course, I was right).

    I wrote down the characteristics of the capacitor, I had SAMXON 1000uf, 10v. which translated into our mighty Russian means 1000 microfarads and 10 volts, while looking for capacitor manufacturers I found out that SAMXON is on the black list, that is, the capacitors of this company are not of very good quality.

    Having searched all non-working “leftovers” electronics in the house did NOT find a capacitor with suitable characteristics. It is NOT advised to use used capacitors everywhere because. “Link” there may not be much left in them.

    I assembled the monitor back, before that, when I was looking for information, somewhere information was deposited in my head that the monitor might NOT turn on at all in winter. I concluded that you can try to Heat the monitor, so I did it, put a heater on the back of the monitor. “wind blower “and the monitor lit up after 5-10 minutes of blinking of the LED indicator, from sin further removed the monitor shutdown in the settings and stopped turning off the monitor, in this mode it worked for about a week (at night it launched something black on the whole screen, for example, the beginning or end of a movie ).

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    I turned off the monitor at night, because capacitors can store voltage for some time, it is advised to de-energize for 15-20 minutes before soldering, and someone advises to ground, I did not ground because I was sure that overnight the capacitors would discharge without voltage connected.

    Immediately in the morning I disassembled the monitor, prepared a tin soldering iron and another pribluda, soldered one leg of the capacitor, pull it to the side, then the other, noticed that I have 3 such capacitors (SAMXON), I decided to replace everything, but 1 was glued to the second more.

    It was decided to replace 2, because the holes were filled with tin, I took the capacitor in my hand, inserted the capacitor leg into the hole, and melted the tin from the back side until the leg did NOT go through, I did the same with the rest of the holes, inserted 2 new condensers so that between the board and they were about 3 mm apart. capacitors can swell Not only up, bent the legs to the sides, rolled in, “bit off” extra length of legs with nail clippers (because there were no clippers).

    I decided to do a test run for the assembly, connected the power, pressed the power button and. nothing, I was about to start getting upset, when I pressed the button harder and the monitor displayed the long-awaited Acer logo! Collected, included and decided to write an article, I hope it was useful to you The information I stated.

    Conclusion: Monitor repair. replacing capacitors is not so difficult, I spent 33 rubles for 3 capacitors, Everything else was, in a repair shop they would take from 600 to 2000 rubles, Plus. the experience is priceless!

    Other monitor breakdowns:

    Does the monitor turn on for a long time? Most likely capacitors “die”.

    Does the monitor turn on and off? (The screen goes out). Perhaps the reason is in the capacitors, and possibly in the monitor backlight lamps (more likely that the matter is in the lamps).

    Does the monitor turn on but there is no picture? Perhaps the backlight lamps have served their purpose, you need to change, you can replace it with LED backlight, then you will NOT have a regular monitor, but a monitor with LED backlight or LED monitor (unless of course it was with LED backlight before)

    Update: A day later, I noticed that 1 of the capacitors that I replaced turned out to be with different characteristics, I made a mistake due to the fact that they are outwardly completely identical, and usually capacitors of a different capacity differ in size, so I replaced the 470uf 25v capacitor with 1000uf 10v.

    I was looking for info on the question “Is it possible to change capacitors to a different capacity?”, I did not find an unambiguous answer, someone says it is possible, someone does not. it all depends on the function of the capacitor in the place where it is installed, only a day has passed since the replacement, turned off the monitor at night, in the morning the monitor turned on quietly, I don’t even know how to return this capacitor to place or not, because I read that the voltage is lower. Not worth it. And He’s not bloated.

    My mistake can be attributed to both pluses and minuses, tk. many are wondering “Is it possible to replace a capacitor with a larger capacity or power?”, in my case, the experiment was a success, although I did not want to and was afraid of experimenting. in case of failure, I would not be able to buy myself a new monitor on the same day, at least not for a modern widescreen LCD.

    Write for any question, I will help you as much as I can.

    Reset BIOS settings.

    The method is quite easy and often helps to solve this problem. Quite recently, one of my friends had just this situation with the monoblock ACER, the monitor light blinked when it was turned on, and the screen itself was black and did not want to turn on, although the coolers were noisy and the drive was working, in general I reset the BIOS settings and it helped.

    Once I already wrote a solution to such a problem, when the time gets lost, it is just related to the BIOS battery, but now a little about something else, we need to reset the BIOS settings, which is quite simple to do, you first need to turn off the computer, even turn off the network completely, then open the cover of the system unit and inside, on the motherboard you will find a battery that needs to be pulled out for five to ten minutes.

    After this procedure, put the battery back in place and turn on the computer.

    This is what the BIOS battery looks like:

    And here’s how it looks on the motherboard:

    On computers, unlike laptops, it is often inserted vertically against the motherboard, making it difficult to find at times, so look carefully.
    In computers, by the way, basically only two types of batteries are used:

    Didn’t this solution help? We go to the second.

    Check contacts.

    Sometimes, it just happens that they don’t completely insert the RAM modules into the slots, or even completely forget to insert the card cable to the motherboard after any procedures with the hardware inside the PC itself, usually after cleaning the computer from dust. Of course, if the card is faulty or not turned on, then this should be mentioned on the monitor itself. But sometimes it may not be.

    Same, “operational” should fit tightly and click a little, no need to hit it with a hammer or anything else, it quietly enters the slot, just insert it straight and the latches should close. Do not forget to check the external contacts of the monitor with the system unit, the cable may come off, the socket may also be damaged or simply dusty.

    Solution to the problem: if the monitor does not turn on when the computer starts

    This article provides detailed solutions when the monitor does not turn on when the computer starts up, and provides practical tips for resolving the problem.
    (By the way, if, when you turn on Not only the monitor is black and one beep of the BIOS signal, but emits a large number (from 2 or more) beeps, then look at the meaning of your error code. BIOS sounds, because it may be something completely different. )

    Well, for those who have reasons to look at the BIOS error codes, and the monitor still does not turn on, there are slightly different solutions.

    ! First of all, check the performance of the monitor itself before performing the steps below. You can check it very simply, thanks to the author for this addition “Kub”, otherwise I did not think about an elementary thing that NOT everyone knows and knows how to check the performance of the monitor, in general, here is his comment:

    Dust off.

    If resetting the BIOS settings and the correct connection of the hardware did not help to solve the problem when the monitor does not turn on, then look carefully, maybe your computer is simply forgotten by dust, try to remove the RAM modules and clean both the modules and the slots for RAM (random access memory).

    This is how RAM modules look like:

    This is what the slots look like when they are already removed operative:

    The slots can be cleaned neatly with a brush to get inside or just blow dust from there, and simply wipe the contacts of the operational modules with an eraser. After this procedure “RAM” put it back in place, just as they stood.

    It is also necessary to clean the cooling system from dust, especially in laptops, the cooler is heavily clogged with dust.

    Then look at the card, or rather into the slot on the motherboard where the card cable is inserted, in the same way as with the RAM, clean the contacts of the adapter cable and the socket on the motherboard.

    Check power supply.

    Indeed, the inoperability of the power supply may be a prerequisite for the fact that the computer does not turn on or, more correctly, it turns on, but perhaps it does not have enough power and due to this, only the lights flash, and the monitor does not turn on. Therefore, it is imperative to check the power supply for performance, fortunately, your very useful post was written by Dmitry Shemyakin on his IT blog, which will help you check the power supply.

    If nothing helps at all.

    It’s a shame, of course, but this situation happens quite often, it seems that I checked the contacts and cleaned them from dust, and the BIOS dropped it, but it doesn’t plow anything. The fact is that the motherboard itself or the card may be out of order. Here, even before the breakdown, it was necessary to diagnose the card for serviceability, when it only gave hints of a breakdown.

    As I said above, not all computers are able to warn about a malfunction of the card and here you need to take measures, first check your card on another computer, or put another one on you and check whether the monitor turns on. And if it’s not about the adapter, then there is nothing left but to change the motherboard.

    That’s all for today, I told you about how to solve the issue, if the monitor does not turn on when the computer starts, be sure to subscribe to blog updates so that you do not miss the following materials.

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