What to do if the monitor doesn‘t turn on when you turn on your PC?
Today we will tell you what to do if the monitor doesn‘t turn on at computer startup. There are a variety of reasons why users are faced with this problem. Let’s review the most common cases and try to effectively remedy the situation.
Why the monitor does not turn on when you turn on your computer?
- Monitor’s cable is plugged into wrong socket;
- Faulty power supply, adapter, connecting cable, specific port or damaged contacts;
- No power to monitor due to damaged plug or socket;
- There is a problem with the RAM or the CPU;
- Physical damage to the hardware of your system, such as a problem with the video card (discrete or built-in);
- Monitor doesn‘t work or shows a black screen due to automatically adjusted BIOS settings;
- Existence of a serious software malfunction in the operating system after updating video adapter drivers, etc.д.
Physical check of the devices
The first steps can be called the simplest and most obvious:
- Check the integrity and serviceability of the cable used. It is done in the same way as described above: connect it to the main monitor, if it will work. the cable is serviceable, otherwise it must be replaced;
- Very often Windows 10/8/7 doesn‘t see a second monitor because of bad contact between the cable and the socket. Make sure that all the inputs are plugged in up to the end and reliably fastened, that is they won’t bend (this refers to connection through HDMI, DVI, Display Port). If it is a VGA connector, then it should be additionally screwed to the port on the computer with the available screwdrivers;
- As we said before, it’s worth checking the second monitor, using it instead of the main one. Pay special attention to the power button, usually the LED on the power button lights up and the difference between the depressed (on) and depressed state may be almost invisible;
- Another possible cause is a bad port on your computer. Try to use a known good port or connect a second monitor to the ports on your motherboard for integrated graphics.
What to do if the second monitor is not detected by the system, we will tell you below. We also recommend that you run the diagnostics exactly in the order that these steps are laid out in our article.
The main reasons why there is no image on the monitor
There are many ways, one of them is to check cooler operation on graphics chip, but there is a more proven option. So, connect your monitor directly to the motherboard, all boards have special connectors that allow you to use built-in graphics.
Built-in graphics card is a graphics chip that is built into the processor itself, this technology is used by all Intel processors, as well as modern representatives from AMD (in particular Ryzen series). Once you have connected the monitor directly to the motherboard, you need to disable the discrete video card. Now you can turn on your computer, if the problem was in the video card, the image computer will work again.
Also if your PC turns on but there is no image you can try resetting the BIOS, sometimes this can help. See the video below for more info on how to do this.
The computer turns on, but there is no image. such a problem may also indicate that you have a burned out graphics card. I did not make this item number 4 for nothing. Usually people just do not get to point 3, because this problem often “resolves” at the stage of “cleaning the computer from dust. But what if you have checked the first 3 points and the computer still turns on, but there is no image? Don’t worry about it. =)
In order to check the video card we need another card, borrowed from a friend for a while, or if you have a built-in video card on your motherboard, that’s perfect. This is what it looks like:
You need to power off your computer, remove the video card, (more on that here) and plug the video cable into another video card (built into the motherboard). Then turn the computer on. If the image appears, you can go to the store for a new graphics card. (if you need it, because many people only need a computer for school or simple work). If you are not an avid gamer, do not build cool 3D models, do not work with computer graphics, etc.E, the built-in video card is enough for you. )
If you do not find a built-in video card on your motherboard, you need, as I said before, to borrow a video card from a friend, turn off the computer, remove your video card, put in its place your friend’s video card and turn on the PC. If the image appeared, then go to the store for a new video card. (Although you can try not to give back your video card to a friend =), after all he is a friend)
If the image after replacing the video card did not appear. read the article further.
The issue is with video card. Accidentally, as a result of some unintentional shock or a slight shaking may unscrew the screw from the video card. Here we need a screwdriver to unscrew the side panel. Make sure you disconnect PC from power supply before proceeding.
Examine the card. If it is really not in place carefully push it back in place. Make sure that it is not burned out (in this case also the monitor will not work).
Reinstall all the screws and nuts in its place and turn on the PC. helps? If not, continue with the repair.
Wrong signal source selected on your monitor
Monitors which have more than one video input have a button for switching between the signals from those video inputs. This button is usually called “Source” or “Input”. If the buttons on your monitor are not labeled, see the manual.
Try to repeatedly press this button to switch to another video input. If wrong video input was selected on the monitor, this should solve the problem and the “No Signal” message will disappear.
Why won’t the monitor work?
No power to the monitorMonitor’s power supply should be checked first of all. When the monitor is plugged in. There should be a yellow or red light on the monitor. Check the plug of the power cord and the connection of the power cord to the monitor. You can also try connecting the monitor with a different power cord. If everything is plugged in and the power light is on, then the problem is not in the monitor’s power supply.
Along with it it is recommended also to check and correctness of connection in the socket for this purpose remove and insert again a cable of connection, both in the system unit, and in the monitor. There is a chance that the connection cable may be broken, so try connecting the monitor to the computer with another cable.
If you have 2 graphics cards then make sure that you have disabled the integrated graphics card in your BIOS setup.
If you don’t solve the problem or if you haven’t done any work on the system unit before then try plugging the card into another slot on your motherboard. If you have an integrated card then connect the monitor to that slot and first take out the discrete card to check the monitor itself. It is possible that the video card itself is broken.
It is possible that the monitor itself is broken, this is also common. In this case do not get too upset, because if the monitor does not turn on, it’s not as bad as in the case of problems with the screen matrix.
When the monitor shows BIOS loading, but after that a black screen and no operating system startup sound appears, then reinstall the system.
If the monitor does not work after all these actions, try to connect it to a laptop or video player to check its functionality. If the monitor works when connected to a video player and doesn’t turn on when working with a computer. The problem is in the video card or other computer components. If the monitor doesn‘t work when connected to another device. take it to the repair shop. You can also try to connect another monitor to the computer or a modern TV, if the image will be. the problem is in your monitor, if not. then the problem look in the computer accessories.
We wish you success in solving the problem. If you can’t solve it, our experts will help you.
When the monitor doesn‘t work for some reason while turning on the computer itself one of the suspects may be the memory module. Typically the RAM may make some noise when you turn it on. Although it is not a prerequisite.
It is absolutely necessary to check the RAM and make sure that the problem does not occur on its side.
You need to power off the PC, de-energize it and remove the side cover. Remember or even take pictures of exactly how the memory was installed in the system unit. Now move the side latches to the sides and remove the RAM modules.
Using an eraser or sponge soaked in alcohol, wipe the pins of the modules. Then put everything back, connect the cable and check if the monitor will work after these manipulations.
If the situation does not change, try one more variant. If you have several modules, leave only one and remove the rest. Or swap the slots. After each of these manipulations try to power on the computer.
If you see an image on the screen, the problem is in the RAM. The problematic module will need to be replaced.
As you can see the system unit, or more precisely its components, may also be the reason why the PC itself works, but the monitor does not turn on.
When turning on the computer the monitor does not work due to its own fault
The monitor itself may stop working due to some reasons beyond our control. It can be a power surge, material fatigue, or simply a failure of some electronic component. This can explain why the monitor doesn‘t work when you turn on your computer. Repairing a broken monitor at home is hardly possible. Of course, if you are an employee of the service center with experience, you can cope with the repair of the monitor and with your own hands. But most people are ordinary users. So it remains only to properly diagnose the problem and send the device to the service center.
It is logical to consider as malfunction of the screen the conditions when it is “silent” at all. That is, the indicators are not lit and there is no image, as well as the monitor does not turn on from the first time, or from subsequent. There are essentially two ways to find out if the monitor itself is at fault: check the power and video cables. The whole test comes down to finding a similar wire and testing it on our suspect. If you’re familiar with other ways to diagnose and troubleshoot monitors, you can share them in the Комментарии и мнения владельцев.