Unfortunately, problems with different components of a computer happen often. Not only internal devices that are in the system unit may fail. Often there are times when the monitor does not work. Diagnosing this device is not easy. To test the screen, you need to have some knowledge.
Causes
Why does the monitor not work? The reasons for this problem can be many. Sometimes they are obvious. There may have been a voltage drop and the screen went blank. Maybe the monitor received physical damage during transportation.
But what if the monitor does not work, but there were no such problems? The reasons may be as follows:
- lack of monitor power,
- problems connecting the device,
- Screen settings fail
- lack of video card drivers,
- video card malfunction,
- problems directly in the monitor,
- system errors.
Initial check
First you need to determine whether the monitor really malfunctioned. To do this, hold down the power button on the computer and wait until it stops making noise. In fact, it requires a normal PC reboot, which is considered a “panacea” for all problems.
After a complete shutdown, you can turn on the computer again. If the light on it lights up, and you understand that the system is running, it means that the PC is definitely working. Sometimes after a reboot, the monitor begins to cope with the tasks. If this does not happen, and the monitor does not work when you turn it on, you need to look for other reasons.
No display power
If the monitor does not work, check all cables, power buttons, etc. Often users start to panic and look for serious damage, even without checking the monitor panel. Perhaps you just forgot to press the right button.
There is a possibility that the user needed a free outlet and he turned off the device from the network. If you see that the light is on, then the monitor is still connected, and the problem is not in the power.
Connectivity issues
What to do if the monitor screen does not work? It is necessary to check the device itself and its wires for integrity. Perhaps one of them is damaged and interferes with the connection. There is also the possibility that it is not tightly installed in the connector on the PC interface panel. This is especially true for older monitor models that connect via VGA.
You also need to check which connector the screen is connected to. It often happens that the monitor does not work due to the fact that it is connected to the integrated card, while the whole system works on a discrete one. In this case, you need to inspect the PC interface panel and find another connector there.
If the monitor was connected correctly, you can remove and reinstall the cable in the desired port. It may be turned the wrong way or not connected properly.
Connection problems include broken contacts on the cable and connector. If there is a spare wire, try replacing it. You can also connect the monitor to another computer or laptop to check if it is working.
Settings
A failure in the image settings could also cause the problem. In this case, you need to try to change them. To do this, you can connect the screen to another connector or start the safe mode of the system.
In safe mode, you can reset the settings. Typically, monitors have simple and advanced settings.
You also need to make sure that the integrated graphics adapter is disabled in the BIOS. Otherwise, the system cannot independently determine the connected device - and, as a result, the monitor does not work.
Graphics card drivers
Display malfunctions could also occur due to the removal of the video card driver. The same thing happens after they are updated. If the problem is really a hardware failure, then you will be able to get into safe mode. Accordingly, it will be easy to "reanimate" the performance of the video card: restore the driver or install new ones.
Graphics card issues
Not only drivers can cause the monitor to not work when you turn on the computer. There is a chance that the problem is with the graphics adapter.
If you recently cleaned the system unit, then you could touch the video card, and now it is not fully installed in the slot. Also you could be mistaken with its connection. You need to disassemble the case and carefully inspect the motherboard and the adapter on it. You may notice burnt contacts.
Another option is to disconnect and reconnect the video card. At the same time, you can clean it if you have not done this for a long time.
Cleaning
Some users do not pay due attention to cleaning. However, dust that accumulates inside the case slows down the performance of the PC. Therefore, various kinds of failures can occur.
Moreover, if a similar problem happened, you need to clean not only the video card. It is very important to get rid of all dust and even change the thermal grease if necessary. Do not forget about the memory modules and the entire cooling system. Of course, you should not perform general cleaning of your PC every month. It is enough to do this once every 3-4 months.
System errors
If the monitor does not work on the computer, there is a possibility of various kinds of system errors. Sometimes when the system starts, the light on the monitor lights up and blinks, but the image on the screen does not appear. You can try resetting the BIOS.
To do this, you must disconnect the computer from the network. It is important to turn off the toggle switch on the back of the case, as well as remove the plug from the outlet. In order for the current to leave the motherboard and its components, after all that has been done, you need to hold down the power button on the PC. You have to wait a bit - and you can disassemble the case.
Depending on the location of the motherboard, you may need to remove it. To do this, accordingly, you need to disable all components. Next on the board you need to find the battery. It is similar to the one that is placed on the watch, only larger.
You need to get the battery. This is done using a special lever. Then you need to wait 5-10 minutes. After that, you should install it again, assemble the computer and start it.
operating system
System problems include problems in the operating system. How to understand that it is in the OS? If you turn on the PC and see the BIOS download on the screen, and after that the picture from the monitor disappears, then the operating system can’t cope with the launch.
Many factors could lead to this:
- software incompatibility of devices,
- hardware failures
- malware
- Incorrect settings, etc.
If you have the opportunity to reinstall Windows, then do it. There is a high probability that this will help get rid of the problem.
Laptop problems
Sometimes the monitor does not work on the laptop. What to do in this case? Solving this problem is somewhat more difficult, since the monitor and laptop are an inextricable mechanism.
Start by resetting. To do this, turn off the device. Also remove the plug from the outlet. Next, you need to remove the laptop battery. To reset the settings, hold down the power button for 20-30 seconds. Now you can return the battery to the compartment and connect the device to the network.
If the reset did not solve the problem, you need to understand which component failed. To do this, you will have to find an external monitor. After connecting the screen, you need to turn on the laptop and press the combination Fn + F8. Using these keys, you can configure the broadcast image to an external monitor.
If the picture did not appear on the external display, it means there are problems with the video card of the device. If there is an image, then you need to diagnose the laptop. The check will reveal a malfunction of one of the components.
The screen on the laptop may also not work due to software malfunctions. For example, you set sleep mode at night, and after exiting it, the image did not appear. You have to check the video card drivers. To do this, go into safe mode and update or install new software.
Many associate the problem with the laptop overheating, especially if the screen goes blank during operation. In this case, you need to install a special utility, for example Speccy. It will help to test the temperature conditions of all system components. Perhaps the cooling system has become unusable or needs to be cleaned. It is also worth considering the purchase of external JI.
If the monitor does not work on the laptop and no methods help to fix the situation, you need to carry the device for repair. If this happens with an external device, then most likely you will have to buy a new screen.