The monitor doesn’t turn on when you start your computer

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

One day you turn on your computer and everything seems to be fine, the system box is running but the monitor screen doesn’t work. What to do in this situation and how to solve the problem. we will tell you in our article.

To begin with we should say a few words about diagnostics. It is very important in this case to determine the nature of the problem. If when you turn on your computer monitor does not respond. this means that it does not receive a signal from the computer, but if the monitor responds to turn on your computer, the indicator shows the connection with it, then the problem is either in the video card or with the monitor itself. If the system can’t boot up and the monitor doesn‘t show BIOS booting either, then the reason is in the computer itself.

After such analysis proceed to the search of the reasons of no picture on the monitor and the decision of the given problem.

Reasons why the monitor does not turn on when the computer is turned on

Some reasons are so simple that many people, after reading their description, would think that these lines were written by a kindergarten teacher for his students who for some reason does not turn on the monitor. But order is order and we will follow it, from simple to complex, no matter how ridiculous it may seem.

  • Reason one. the monitor is just off.
  • The second reason is the power cord.
  • Reason three. the cable between the monitor and the computer.
  • Reason four. unknown but similar to static. Probably a precursor to a visit to the service center.
  • Reason number five. the screw.
  • Cause sixth is the video card.
  • Reason seven. RAM.
  • Reason number eight. monitor power supply.

The rest of troubles, due to which the monitor may not turn on when your computer is turned on, are already in the competence of narrow specialists, and we won’t talk about them.

Below we will consider ways to eliminate these causes. In most cases, this can actually help your monitor come back on and shed light on your keyboard. Let’s go!

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The monitor doesn‘t turn on because it is turned off

No matter how ridiculous it sounds, but the monitor does not turn on, because it is off. How such a seemingly natural fact is here, in the list of problems, there is a reason.

Some monitors have the power button not on the front panel, but on the bottom, on the end. That is, it is looking “into the floor” and not at the viewer. And often, computer owners themselves forget about its existence. You bought it, you turn it on and the monitor is in standby mode, even if it’s been on for years, and it turns on by itself as soon as it senses a signal in the input. Here’s this button can be accidentally hit and then, of course, the monitor turns off. Needless to say, the solution to this “problem” is very simple: you have to find this button and press.

Found it and pressed it. Nothing has changed. Let’s move on.

The cord. Not the one on the stage, the one in the pilot. I mean, the wrong one. which flies, and the one on the floor, simply put, a cord that’s plugged into an extension cord. Nothing complicated here either. The cord seldom falls out of the pilot, in fact it never does. everything there is rigged up to European standards. But it can fall out of the monitor where, of course, everything is also fitting to European standards, but there is one nuance. This cord is often very tightly plugged into the monitor, so it might have been incompletely pushed during computer assembly and as a result it could have fallen out when, for example, you move the monitor.

The solution here is very simple too: with big enough but reasonable effort try to push a cord deeper than it is and if it suddenly moves (about one centimeter approximately) it will most likely solve the problem. the monitor will switch on at once.

Tried. Didn’t help. Well, let’s go further.

The cable between the monitor and the computer

As in the second case we should check if the cable connecting the monitor and the computer has not fallen out. In this case we may think that the monitor didn’t turn on. And in fact the monitor is turned on but it does not receive a signal from the computer and just shows us a black screen. So check the cable.

If it is HDMI (with two connectors like USB but wider) then you just need to tuck these connectors in both on the system box and on the monitor itself. If we deal with another type of plugs (either so wide and rectangular with white plastic. DVI, or so wide and trapezoidal with blue plastic. VGA) then we should not only tuck them in but also tighten the screws, that nothing else can fall out.

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Non-professionals, assembling the computer, sometimes forget to tighten them (works and okay)!) but sooner or later this cable falls out. And then we sit and wonder why the monitor doesn’t turn on. But here we have tightened the screws. I hope the monitor works. No? Let’s move on.

Reason #4. Mystical. It may be static.

Treatment: disconnect ALL cables from the monitor, and if there are audio cords, disconnect them too. And go have tea. And let the monitor stand disconnected from everything and think about its behavior. Sometimes it helps.

By the way, the same method often works for the system unit, if it suddenly stops starting. stands silent like a fish in a pie. What happens there is unknown. Maybe there is some static electricity flowing in and blocking some startup process, and when we change the galvanic structure of the system by pulling out all the wires, this static will “flow” somewhere and everything will be fine. Also it’s possible that this problem with the same recurring solution is a precursor to a visit to the service center. But let’s go further. We drank some tea, checked it it didn’t help? The monitor doesn’t turn on? Then let’s continue.

Video card screw

Although above we called this reason so simply: “screw”, in fact it is not as simple as the previous ones. This requires some manly household skills, such as wielding a screwdriver, fearlessness in front of electrical devices and neatness.

So, we turn off the computer, unplug it, take off the side cover and strictly check the video card. You can skip this point if the graphic card is integrated, i.e. is not inserted into the computer as a separate unit, but is located directly on the motherboard (or CPU).

Well, in other cases you should first make sure that it is exactly in its slot. And if there is a suspicion that it has failed, then carefully, without excessive force push it back into place. If it moved and stood up straight, then you need to tighten (and if it is not present, then find and screw in) the screw that connects the graphics card to the back of the computer. Such a defect also occurs from inattention or unprofessionalism of the one who installed the card. The screw is not there for the fun of it.

Okay. Tweaked the video card. The monitor fails to turn on again! Let’s go further.

The video card is burnt out

This is simple because if the video card is burnt out the computer signals about it. He does it with a speaker on the motherboard. If your computer used to make a single “peak” at startup then when the video card has died it will beep in different ways, depending on the manufacturer of the motherboard. But this is not the random moaning of a sick electronic mechanism, but a clear message about what happened to it.

Translate these signals into diagnosis by reading our article about BIOS audio signals but if the monitor doesn’t work and the computer is excessively raspy then you don’t need to translate anything. You have either to change the video card (or remove it and plug the monitor into an integrated one if you have one) or (attention!) check the RAM. Continue to.


Memory burned out. One of the signs of this, again, the morse from the speaker. But since we consider only the problems that can be identified and eliminated with some skill without resorting to the services of a specialist, the variants of sounds we will not describe here.

The monitor does not turn on, computer beeps. check your video card, beeps anyway. check your RAM. That’s enough of us. RAM is one, two or more narrow and long strips plugged into the motherboard, in narrow and long sockets, respectively.

Our task is to carefully take out these tabs one by one and start the computer after each such manipulation.

WARNING! Be sure to remember which board was in which slot, because when assembling the computer, their location could be selected by the masters, depending on the parameters of RAM, and changing this scheme can lead to a deterioration of the computer, or it will not run at all.

If the computer starts after removing one of the cards, try to replace the remaining, “live” memory with the first one. If the computer starts again, it means the removed memory is to blame. If not, there is a problem with its socket. If you decide to buy RAM on your own be very attentive to the parameters! There’s more than one, not just capacity and type. Okay. You jerked the memory, nothing changes, and then for a layman but a man with hands, the last thing left is to go back to the monitor, because that is where the last cause of the problem may be buried today.

Monitor power supply

The last reason why your monitor does not turn on is the monitor’s power supply malfunction. Its fixing is probably the most laborious action of all the manipulations discussed in this article (not everyone can handle it). But the easiest to describe.

Samsung SyncMaster 710 monitor power supply

So we take the monitor apart. Find the power supply. Take it out if you need to. If there is a fuse on the board then check it. Next we look at the capacitors. We can see the blown fuses. Desolder. Insert the new ones (of course, that observing the nominal values, but he who got to this point, and himself knows such elementary things). Putting it all back in place. Assembling monitor. Connecting. Switching on. It works!

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��️ The Monitor Won’t Turn On �� When PC Starts

Well, finally the monitor turns on again! Our work was successful. And the success is accompanied by a reward. saved on third-party specialists, sometimes a very tangible amount!

At this point we can finish the mini course on image resuscitation. Now you know why sometimes the monitor doesn’t turn on when the computer is switched on and how to solve the problem.

What to do if the monitor doesn’t turn on?

I use HDMI cable to connect monitor to the system unit (to the discrete video card). You can have VGA, DVI and so on. often the monitor doesn’t work with the system unit switched on just because the cable to the system unit has come loose.

In this case you just need to jiggle the pins of the cable both at the input to the monitor and at the point of entry to the system unit. In 50% of cases the monitor will work. In addition, the contacts can oxidize. In this case you need to clean them with a absorbent cotton with alcohol (you can use an eraser) to remove the greenish deposit if you get it.

Also if you often move the monitor the input slots may become loose and the cable will not adhere tightly to the contacts. In this case you need to fasten them, even with scotch tape, as long as they are tightly connected. In general, I advise you not to move the monitor too much so that the cable does not loose and does not pop out.

Besides it wouldn’t be out of place to try to connect the monitor via another cable. It is very possible that it is the cause.

The situation is similar to the previous one. Sometimes there is no image on the screen because the monitor is not connected to the system unit. If that is the problem, then after connecting to the system the device will operate normally.

In rare cases the monitor doesn’t turn on and doesn’t start due to the banal static electricity. Repair in such situation is elementary. You need to disconnect all the cables from the device and just wait for a few hours. By the way sometimes in the same way manages to “fix” the system unit. In this case you do not even have to download Victoria HDD and look for any problems with your hard drive. If this “repair” didn’t work and the monitor does not work and does not respond to pressing the “Startup” button, then the problem should be located inside the system.

The monitor does not turn on at computer startup. causes

The computer screen may not turn on for various reasons. And they can be determined by the stages of computer booting. For example, if loading is stopped at the stage of screen switching on, that is, it does not react to power supply, it means that the matter is either in serious damage of video card or in incorrect connection. If booting reaches the stage of the operating system, but then for some reason the display turns off, then drivers, video card and the operating system can all be to blame. Failures in one of them can cause malfunctions in the screen as well. Next, we’ll take a closer look at why the monitor can malfunction, and what to do if it doesn‘t work.

Why the monitor doesn‘t turn on when you turn on your PC and how to fix it

If everything in a laptop is interconnected and works as a single mechanism, but on personal computers the system unit with all its contents and the monitor function separately.

The standard power-on procedure looks like this. The user first presses the power button on the system box and then turns on the power button on the monitor itself. When the hardware is working normally, everything turns on, the operating system starts up, the OS logo appears on the screen, then the desktop appears, etc.

But sometimes it also happens that the system unit starts normally. But the monitor still does not want to turn on. It remains black and nothing happens on the screen.

It is a mistake to think that the problem is only on the display side. In some cases the cause of this situation is in the computer itself. That is in the system unit.

The problem solution: if the monitor does not turn on when the computer starts up

This article describes detailed solutions when the monitor doesn’t turn on at computer startup and gives practical advice on how to solve the problem. ( By the way, if you have not only a black screen and one BIOS beep, but many beeps (from 2 or more) when you turn it on, please check your error code. BIOS sounds, it might be something else. )

Well, for those who have no reason to look through the error codes BIOS, and the monitor does not turn on, there are solutions somewhat different.

! First of all check the monitor itself, before performing the actions below. Check it can be very simple, thanks for this addition to the author of “Kub”, and then I did not think about the elementary thing that not everyone knows and knows how to check the monitor, in general, here is his comment:

“Modern monitor checked elementary. disconnected cables from the system unit, turn on the power and press your favorite button POWER power light is not blinking and the screen will display the words. no connection or check the cable and so on.E if not try to press the menu button. if silence and black monitor then 95% of the monitor is dead” Well and then, respectively, if the monitor is not dead at all, then perform the following recommendations, when the computer monitor does not turn on.

Reset BIOS settings.

The way is quite easy and often helps to solve this problem. Recently an acquaintance of mine had just the same situation with ACER monoblock, light bulb blinked while switching on the monitor, but the screen was black and would not turn on, even though the coolers and the drive worked, in general, I reset the BIOS settings and it helped.

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Once I wrote about the solution to such a problem, when the time is wrong, it is just connected with the battery BIOS, but now a little bit about something else, we need to reset the BIOS, which is easy enough to do, you must first turn off your computer, turn off the power grid even, then open the lid of the system unit and inside, on the motherboard find the battery, which must be removed for five to ten minutes.

After resetting you put the battery back and turn the computer on.

And this is what it looks like on the motherboard:

On computers, unlike laptops, it is often mounted vertically to the motherboard, which sometimes makes it hard to find, so look carefully. In computers, by the way, mostly only two kinds of batteries are used:

Check your PC pins.

Sometimes, it just happens that the memory modules are not fully inserted into the slots, or even forgot to insert the video card cable to the motherboard after any procedures with the hardware inside the PC, usually this happens after cleaning the computer from dust. Of course if your video card is faulty or not working, it should be mentioned on the monitor itself. But sometimes that might not be the case.

Also, “RAM” should enter tightly and a little click, no need to beat it with a hammer or anything else, it easily goes into the slot, you just have to insert flat and the latches should close. Don’t forget to check and external contacts of the monitor with the system unit, the cable can come off, and the jack could be damaged or just get dusty.

Clean dust off.

If the reset BIOS and the correct connection of the hardware did not help to solve the problem when the monitor does not turn on, look carefully may be your computer is just clogged with dust, try to remove the modules of RAM and clean both modules and slots for RAM (random access memory device).

This is how RAM modules look like:

This is what the slots look like when the RAM is already removed:

monitor, doesn, turn, start, your, computer

Slots can be cleaned carefully with a brush to get into or just blow dust off, and the contacts of RAM modules just wipe with an eraser. After this procedure “RAM” modules are inserted back in place, just as they were standing.

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

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

Check the power supply.

Indeed, the malfunctioning of the power supply may be the reason why the computer does not turn on or, more correctly, it turns on, but perhaps it does not have enough power and due to this the lights are only blinking and the monitor does not turn on. So it is necessary to check the power supply on efficiency, fortunately yours, Dmitry Shemyakin wrote a very useful post on his IT-blog, which will help you to check your power supply.

If nothing helps at all.

Of course it’s a shame, but this situation happens quite often, and like a contact check and cleaned from dust and reset BIOS, but nothing works. The thing is that maybe the motherboard itself or the video card is broken. Before the failure you should have checked your video card when it was just hinting at it.

As I said above, not all computers are able to warn about the malfunction of the video card and then you have to take measures, firstly check on another computer your video card or you put another and check whether the monitor will turn on. If it is not the video adapter, you have nothing else to do but to replace the motherboard.

monitor, doesn, turn, start, your, computer

That’s all for today, I told you how to solve the problem if the monitor does not turn on when you start your computer, be sure to subscribe to the blog updates not to miss the following materials.

What to do if the monitor does not turn on when the computer starts up

Monitor is one of the most important peripheral components of any computer. It’s impossible to work without it. So if your monitor doesn‘t turn on during start up or when you start your PC then you need to solve this problem urgently. On this page we’ve collected all the main reasons why the screen doesn’t turn on and also told you what you can do in this situation yourself without the need to involve external companies or repairmen.

What to do if the monitor does not turn on when the computer is started??

When you work with a computer for a long time, you have to deal with issues related to its incorrect operation. A common problem that newcomers and experienced users have is that the monitor does not turn on when the computer starts up. In 90 % of cases the causes of this problem are not the monitor’s breakage. But, let’s break it down in order.