What should I do if the laptop screen flickers? There are four common reasons for this: 1 poor contact and signal interference; 2 screen refresh rate is too low and graphics driver; 3 poor quality power; 4 hardware problems. The bottom of the computer screen flashes, the black screen, the computer screen shakes, in addition to making you feel that the eyes are quickly fatigued, and the long time will bring the eye disease to the user. If it is not resolved in time, it will cause damage to your system, because the hidden problems of the system itself may be reflected in the phenomenon of screen jitter. In fact, there are many reasons why the screen may appear to be jittery. In fact, it is not so difficult to solve. [Solutions for flashing computer screens]: One: poor contact. First look at the power cord of the host and monitor is not connected, if it is loose, this kind of splash screen will appear. Two: Signal interference problem. The cable connecting the monitor has no shield coil. If there is no black bump that is not disturbed, it will also interfere with the screen. Also check for interference nearby, such as high-power audio and power transformers. The display is susceptible to strong electric or magnetic fields, and sometimes the screen jitter is caused by a magnetic or electric field near the display. In order to eliminate all the interference around the monitor, you can move the computer to a table that is all around, and then start the test. If the jitter of the screen disappears, it means that there is a strong electric field or strong magnetic field interference in the original place of your computer. Please take suspicious things (such as the speaker's subwoofer, magnetized cup, etc.) from the computer nearby. Then turn off the display and re-open it several times to achieve the purpose of degaussing (the current display has automatic degaussing function when it is turned on). Three: The screen refresh rate problem. Right click on the desktop -> Properties -> Settings -> Advanced -> Monitor -> Screen refresh rate, CRT adjusted to 75Hz or above (notes the LCD screen of the laptop to 60Hz). In fact, the main reason for the display screen jitter is that the display refresh rate is lower than 75Hz. At this time, the screen often appears jittery and flickering. We only need to increase the refresh rate to above 75Hz, then the computer screen shakes. Will not appear again. Four: The graphics card driver is incorrect. Check if your graphics card is loose. Try uninstalling your computer's graphics driver and installing a stable version of the driver. Sometimes when we enter the computer's display refresh rate, we find that there is no refresh rate to choose from, which is caused by the incorrect or too old driver of the front graphics card. Computers with earlier purchase time are prone to this problem. Do not use the driver on the CD that came with the computer when you purchased the computer. You can download the latest version of the driver card on the Internet and open the Properties window of the system. Click the “Device Manager” button in the “Hardware” window to enter the device list interface of the system. Right-click the display card option in the interface, click the “Properties” command from the pop-up menu, and then click the “Driver” tab in the pop-up card property settings window. Click the “Update Driver” button on the corresponding tab page, and then gradually update the graphics card driver to the latest version according to the wizard prompts. Finally, restart the computer system. If the driver is installed properly, the display refresh frequency selection will appear. Item, and then set the refresh rate to 75Hz or more to solve the computer screen flicker. Five: Restore the BIOS to the factory settings, plug in the memory and graphics card, and reinstall the full version of the operating system. Six: Inferior power or power supply equipment has deteriorated. Many of the components used in computer power supply are poor in workmanship and materials. It is easy to cause the computer's circuit to be poor or the power supply capacity can't keep up. When the system is busy, the display will especially appear on the monitor screen. The power supply must be replaced at this time. Seven: Finally, consider hardware issues such as monitors and graphics cards. Sometimes there is jitter due to the high age of the monitor used. In order to verify that the electronic components inside the display are aging, the faulty display can be connected to someone else's computer for testing. If the fault still disappears, the display is broken and needs to be repaired. Eight: The virus is blaming. Some computer viruses can upset the screen display, such as: character inversion, screen jitter, graphics flip display. [Add some basic knowledge of LCD monitors]: LCD monitors sometimes adjust the image automatically, especially when you reinstall the system or use a one-button restore system, if you do not adjust the resolution and refresh rate in time, the LCD monitor will Automatically adjust the image, this is we will see the screen flashing, in general, the refresh rate can not be adjusted up, the increase will increase the load on the computer hardware is not good for the hardware, especially the graphics card. The computer has an optimal resolution and refresh rate, both of which are corresponding. The higher the resolution, the lower the refresh rate. Now many people use LCD monitors of more than 17 inches, and such LCDs. The best resolution of the monitor is 1280x1024, then the refresh rate is up to 75 and the minimum is 60. As long as the refresh rate is set to a minimum of 60, the computer will not automatically adjust the image, and the computer screen will not flash. If it is another LCD monitor, just adjust the resolution to the best, then adjust the refresh rate to the screen and it won't flash. If the refresh rate is the default and cannot be adjusted, it is very likely that there is a problem with the graphics card driver you installed. It is recommended to use the original graphics driver. The latest driver is not necessarily the best.