No one is immune from the situation when the monitor does not turn on while turning on the computer , remaining dark and lifeless. There are several reasons, after understanding which you can overcome the problem.
Why does not the monitor work?
So, why does not the monitor turn on and the processor is running normally? The reasons can be several:
- The monitor does not have power. Probably, you have a banal power cord. Check both the wall outlet and the place where the cable enters the monitor. If it does not help, try connecting the monitor with another cable - probably the problem is in it. If the monitor has a yellow or red light bulb and does not catch fire, the problem is not nutrition.
- Bad connection between the monitor and the power supply. Sometimes the connecting cable between the two nodes is not connected correctly or is moving away. Check the connection and try another cable.
- Problems in the settings. Sometimes, the cause, because of which the monitor does not turn on, becomes a failure in the image settings: the monitor resolution, frequency, etc. are not set correctly. Try to connect the monitor to another connector or enter the safe mode and reset the settings.
- The poor contact between the video card and the connector sometimes causes the monitor to not turn on the first time. Bad contact can be eliminated by yourself, you need to open the case of the system unit and unscrew the screw holding the video card, remove it and wipe the connector with a dry cloth. After that, re-insert it firmly into the connector and attach the monitor.
- If the monitor turns on when the computer is turned on one time, the reason may be swollen capacitors, blown fuses, transistors and other elements on the power supply board of the monitor. If you do not have experience of self-repair, it is better to contact the service for qualified help.
Problems with the power supply
There are situations when the malfunction does not concern the monitor. For example, when you turn on the computer squeaks and does not turn on the monitor. The audio signals of the BIOS can be different - sound with one draw, repeat short signals 2, 3 and even 7 times in a row. And to understand the reasons, you need to know the notation of BIOS signals.
Turning on, the computer checks all connected equipment. If everything is OK, normal boot occurs and the screen lights up as expected. But if the computer refuses to boot further, the squeaks and the monitor remains dark, you need to calculate the speaker signals and match them with the version of your BIOS. After finding the problem, fix it and try to start the computer again.
The laptop screen does not turn on
When the laptop turns on, but the monitor does not work, the reasons can be covered in the failure of the video card, matrix or loop. If you try to connect another monitor to your laptop , you can more accurately determine what the problem is.
So, if an image appears when another monitor is connected, the cause is a matrix or loop failure, the video card is normal. But if the additional screen remains black, you can conclude that the problem is in the video card, motherboard or other components.
In the second case, it is best to contact the service center for assistance. Sometimes to solve the problem it is enough to reset the BIOS settings of the laptop and / or the motherboard or reinstall the RAM module. You only need to do this yourself if you are completely confident in your skills.
We hope that these tips will help you solve the black screen problem and continue working on your computer or laptop.