The laptop screen is not displayed properly

The reason for your problem:

1. It may be caused by the failure of the parts of the screen itself, such as fluorescent tubes, liquid crystal materials, thin mode transistors, etc., or the cable is caused by the connection line between the screen and the motherboard, but the cable may not be very large!

2. It may also be caused by the failure of the graphics card, but the possibility of this aspect is not as likely as the failure of the screen itself!

According to your description, it should be the above reasons that cause the problem of your notebook, and you said that it does not occur often, which means that the fault is not very serious, but you should also go to the repair station of your notebook to check it and fix it quickly, if the problem is big, you may have to change the screen!

There may be 3 reasons why the laptop display does not display the screen: one is that the laptop graphics card driver is installed incorrectly, resulting in the laptop not being able to drive the graphics card normally; One is that the laptop screen cable is damaged or even broken, resulting in no power supply to the display; The other is that the laptop graphics card is aging or burned out and cannot work properly. Here's a closer look:

1. Make sure that the laptop is really black or there is no backlight, but there is still a display on the screen, if the latter is probably due to a problem with the backlight layer, it can only be taken to a professional repair shop for repair;

2. If the screen is really black, then the graphics card or Nanqiao is broken; You can try the elimination method, use an external monitor to connect to the ** port of the notebook, if the external monitor is also not lit, you can determine that it is a problem with the graphics card;

3. Since most of the notebook graphics cards cannot be replaced, you can only go to the after-sales point for maintenance and replacement of a new graphics card;

4. If the external monitor is normal, then it is the problem of the screen itself or the screen cable;

If the laptop boot screen does not appear, it may be a problem with the software or hardware.

One, the black screen caused by the software.

Sometimes after installing some software or hardware drivers, you find that after restarting, the computer can't enter the system and the screen has been black, which is the black screen of the laptop caused by the software. If it is due to software that causes a black screen, then to:

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For example, you can restart the machine and press the F8 key several times when the system is turned on to bring up the system's startup options menu.

Once the System Boot Options menu comes out, select Enter Safe Mode. If you can enter the safe mode normally, you can delete the software or driver installed before the black screen in the safe mode. Then restart the machine and see if the laptop can fix the black screen issue.

Second, the hardware causes the laptop to have a black screen.

Hardware-induced black screen for the following reasons:

1) The cause of static electricity, sometimes static electricity will cause the circuit of the notebook motherboard to be abnormal, resulting in no reaction on the screen after the power is turned on. You can try to turn off the battery and power of the laptop, and then press the power start of the laptop several times to let the machine release the static electricity. Then connect the power supply, turn it on, and see if it can solve the fault.

2) The memory is loose or the memory has a hardware failure. There are several major components of a notebook computer, including:

CPU, motherboard, memory, graphics card. These parts are indispensable, as long as one of them has a problem, it will cause the laptop to not function properly, the most common is that the boot does not respond. In general, the probability of CPU and motherboard failure is relatively small, and it is more common for the laptop to fail to boot due to loose memory.

At this time, first remove the battery and power supply of the notebook, if it is not difficult to remove the computer, you can open the back cover of the notebook by yourself and reinsert the memory. After plugging in the memory, power it on again, start the machine, and see if you can solve the fault.

3) The LCD part of the notebook is faulty. There are some notebooks that are a little older, and this may be the case. Display components generally include displays, data cables, and some other small parts. If you have a desktop monitor, try plugging it into a laptop.

VGA display interface, and then switch the display to on the laptop.

VGA external display. If you can switch to an external monitor, it means that there is a big problem with the display part.

4) The graphics card hardware is faulty, the graphics card is responsible for the source of all the display output of the computer, so it has a problem, and there is no display on the screen. If the graphics card is broken, the average user can't solve it, and the only way to solve it is to find the computer's after-sales service. If the notebook is within the warranty period, it can be taken for free inspection and repair.