Lenovo notebook has been on the black screen when it is turned on, and sometimes the screen has been

It should be that the cable is broken, and the repair cost is about 100.

One: screen flickering caused by screen backlight.

Fault manifestation: The backlight of the notebook flashes from time to time, and the frequency is very fast, sometimes it flashes several times, sometimes it lasts for several minutes.

This occurs due to the instability of the high-voltage board that supplies power to the screen backlight, or the solder joints at the lamp joints are not firmly connected and ignited.

The screen flicker caused by the high-voltage plate can be solved by replacing the high-voltage plate. In our daily maintenance, sometimes for the sake of the original high-voltage plate** and the supply of goods, it is necessary to modify the universal high-voltage plate to achieve the repair purpose. For related content, please read "Causes of Dark Laptop Screen and Common Maintenance Methods".

If you carefully observe that there will be a small black shadow in the lower left or right corner of the screen, which is caused by the virtual soldering at the joint, the surrounding components have been burned. This small shadow cannot be removed even after restoration.

2: The screen flickering caused by the motherboard charging switching circuit.

Fault performance: When the battery and power adapter are used at the same time, the laptop will flash from time to time, and the charging indicator in the lower right corner of the screen will be switched constantly, and the fault phenomenon will disappear when a single power supply is used. This kind of fault is relatively rare in notebook maintenance, mainly caused by the instability of the non-component of the battery switching circuit on the motherboard, and the fault can be repaired by repairing the components of the motherboard charging circuit.

There is also a situation due to the quality of the power adapter, here is a reminder that the power adapter should be used as much as possible with the original, or with some OEM products. Don't be greedy for cheap use of dozens of yuan of power supply, this kind of power supply in the hand fluttering, the material used can be imagined.

Three: The screen flickering caused by the bad screen itself.

In fact, in recent years, there is a large proportion of notebook screen flickering caused by this reason, and the reason why it is put last is because this situation is limited to several models of notebooks in the same batch. The specific fault performance is: Generally, there will be a bright line under the laptop screen, and after a while, the bright line will evolve into a full-screen flash.

I believe you are no stranger to HP's "splash screen door" some time ago, and the LG Philips LP141WX3-TLN1 screen used in HP notebooks may cause splash screens.

Lenovo also has a small number of notebooks with LCD screen quality defects, the main models are: SL400, Y430, Y460, G430, R400

For the above situation, the only way is to replace the LCD screen with a new one. However, fortunately, this kind of notebook often breaks down during the warranty period, and it can be solved directly to the after-sales point.

The above is the reason for the flickering of the laptop screen, and there are solutions to it, if your laptop screen flickers, you can refer to what the rabbit wrote, I hope the rabbit will be helpful to you. Why are laptops so popular? Because it is small, unlike a desktop computer, which has a host connected to it, it will be very bulky and difficult to carry.

Laptops are not heavy and can be taken anywhere to work, making them the best choice for students to take to school.

The reason why the general laptop screen flickers is because the data cable of the screen is not well connected.,Loosened.,If you shake the screen of my notebook back and forth,There will also be a screen flicker.。 If there is a problem with the screen of the notebook, there will generally be no occasional flickering, and this may only happen if the contact is poor.

What should I do if the black screen does not respond after the laptop boot screen flashesHello! Pro-1, the display data line is not in good contact; 2. Poor contact of the graphics card or; 3. Poor CPU contact and overheating; 4. Poor contact of memory modules; 5. Poor power supply performance; 6. The machine is infected with CIH virus, and the BIOS is destructively refreshed; 2. How to fix the black screen of the laptop 1. The black screen of the boot display is black, only the indicator light is on, and the host does not have any reaction. I can't feel the fan spinning behind my hand behind the main unit.

None of the voltages are measured. Remove it and find that the power adjustment tube is broken, and replace it with normal. 2. The power supply and CPU fan are normal, but the screen has no reflection, and there is no self-test sound.

This machine adopts SLOT1 structure, and the CPU is easy to contact poorly, so it is sent to the after-sales service for inspection and maintenance. 3. Do not self-check when you turn on the machine, and check that the power supply is normal. Using the minimal system method, the machine can start normally when the optical drive is unplugged.

Then install the fault recurrence. It means that there is a problem with the optical drive, and the machine cannot be started. It should be sent to the after-sales service immediately for disposal.

Reasons and solutions:

This is a faulty or knocked out graphics card.

First of all, boot the computer and press F8 to enter safe mode and disable the graphics card;

After successful installation, restart your computer and enable the graphics card.

If the problem persists, it is recommended that you take your computer to the nearest service station for inspection and repair.

Common laptop faults and solutions:

Boot without display, first need to check whether the power indicator is normal, some brands of computers use transportation power-saving mechanism, if it is a new machine, the first time you need to connect the power adapter;

If the power indicator is not on, for models with removable batteries, you can remove the battery and use the adapter to start it alone;

If it still can't be turned on, you need to confirm whether you have installed the memory by yourself, and it is recommended to remove the test whether it is caused by a memory module problem;

If the power indicator is normal, but the screen is not lit, you can try to see if the screen is turned off, for example, ASUS laptops can press FN+F7 to check;

If it is invalid, you can use the battery alone or the adapter alone to turn on the machine to confirm whether it is caused by static electricity. If possible, you can connect an external monitor to see if the display is normal, if the external display is connected to the normal display, it may be a hardware problem of the screen or screen cable; If it does not display properly when connected to an external monitor, it may be a problem with the graphics card or motherboard.

1. The display refresh rate is set incorrectly. Set the new frequency to 75 or higher, and then click OK to return to the desktop. In fact, the main reason for the display screen shake is that the refresh rate of the display is set below 75 Hz, at this time, the screen often shakes, flickering, just increase the refresh rate to more than 75 Hz.

2. Display aging. In order to check whether the electronic components inside the display are aging, you can connect the faulty monitor to someone else's computer for testing, if the fault still disappears, it means that the monitor is broken and needs to be repaired. 3. Inferior power supply or power supply equipment has been aged.

When the system is busy, the display can especially experience screen shaking. When the computer's power supply equipment begins to deteriorate, it is easy to cause the same problem. At this point, the power code can be replaced and the test can be performed.

4. Flashing screen caused by motherboard charging switching circuit. When the battery and power adapter are used at the same time, the screen will flash from time to time, and the charging indicator in the lower right corner of the screen will keep switching, and the fault phenomenon will disappear when using a single power supply. Just replace the motherboard.

Hello, there can be a variety of reasons for the problem of Lenovo computer getting the screen flickering all the time after turning it on, here are some possible solutions:1Check if your computer's hardware is normal

First of all, you can check if your computer's hardware is normal. You can try replugging hardware such as memory sticks and graphics cards to make sure they are well connected. If you are not sure how to proceed, it is recommended that you seek the help of a professional.

2.Check if there is a problem with your computer's system: If your computer's hardware is normal, then the problem may be with your system.

You can try to enter safe mode by pointing the book and see if it boots up properly. If it does, then there may be some software or driver causing the problem. You can try uninstalling recently installed software or updated drivers to see if that fixes the issue.

3.Reinstall the operating system: If none of the above methods solve the problem, then you can consider reinstalling the operating system.

This will wipe out all the data and reinstall the operating system, which may fix some issues that are difficult to fix. However, take care to back up your data so that you don't lose it. In general, there may be a variety of reasons for the problem that the Lenovo computer has been flashing after it is turned on, and it needs to be troubled according to the specific situation.

If you are not sure how to proceed, it is recommended that you seek the help of a professional. In addition, in order to avoid similar problems, it is recommended that you regularly maintain your computer and update drivers and security patches to ensure the stability and security of your computer. <>