What should I do if my computer screen keeps shaking?

What to do if the computer screen keeps shaking

Causes of display jitter

Monitor refresh rate is set too low

When the refresh frequency of the monitor is set lower than 75Hz, the screen will often shake and flicker. In order to avoid this situation, the refresh rate can be appropriately increased to above 85Hz. In this way, the phenomenon of screen shaking will generally no longer occur.

The power transformer is too close to the monitor and chassis

The power transformer will produce electromagnetic interference, causing the screen to shake. This problem can be solved by moving the transformer away from the case and monitor.

Inferior power supply or power supply equipment has aged

The components used in many off-brand computer power supplies are of poor quality, and the manufacturing process and materials are not of high quality. This can easily lead to problems with computer circuits being blocked or insufficient power supply capability. When the system is overloaded, screen jitters will occur, especially on the monitor. At the same time, the aging of the computer power supply will also cause similar problems.

The speaker is placed too close to the monitor

The magnetic field effect of the speakers will interfere with the normal operation of the monitor, causing the monitor to produce magnetic interference phenomena such as screen jitter and cross-color.

Virus makes trouble

Some computer viruses can disrupt the screen display, such as character inversion, screen shaking, graphics flipping, etc. The screen shaking scripts that can be found everywhere on the Internet are enough to make you feel as big as an ox after being tricked.

Poor contact with graphics card

After re-inserting the display card, the fault can be eliminated.

WIN95/98 system caused by post-write cache

If this is the reason, disabling write-behind caching for all drives in Control Panel-System-Performance-File System-Troubleshooting can fundamentally solve the problem.

Power supply filter capacitor is damaged

Open the case and if you see the top of the power filter capacitor (the largest capacitor on the circuit board) bulging, it means the capacitor is broken and the screen jitter is caused by a power failure. After replacing the capacitor, the problem can be solved.

What should I do if my computer’s LCD screen always shakes like water waves

The first thing to do is to carefully check whether there are sources of electromagnetic interference around the computer, then replace a graphics card, or connect the monitor to another computer, confirm that there is no problem with the graphics card itself, and then adjust the refresh frequency. If the above reasons are eliminated, it is likely to be a quality problem with the LCD monitor, such as poor thermal stability. The occurrence of water ripples is a common quality problem in LCD monitors. It cannot be solved by yourself. It is recommended to replace or send it for repair as soon as possible.

Some LCD monitors will have a blurry screen problem when starting up. It feels like there is high-frequency electromagnetic interference. The writing on the screen is very blurry and jagged. This phenomenon is generally due to the fact that there is no digital interface on the graphics card, but it is connected to the VGA interface of the graphics card through an internal digital/analog conversion circuit. Although this form of connection solves the problem of signal matching, it also brings about the problem of being susceptible to interference and distortion. The reason is mainly because the clock frequency of the LCD itself is difficult to maintain 100% synchronization with the clock frequency of the input analog signal, especially when the frequency of the analog synchronization signal is constantly changing. If the synchronization circuit of the LCD display, or If the transmission line connected to the graphics card synchronization signal has problems such as short circuit or poor contact, and cannot be adjusted and followed up in time to maintain the necessary synchronization relationship, the problem of blurred screen will occur.

In a sense, the phenomenon of water ripples on LCD displays is very common; however, most products exhibit very slight effects and cannot be noticed by users

That’s all. If users can feel water ripples, they may wish to check by following the steps below:

1 The signal connection line is in poor contact. This problem is the most common and can be solved by reconnecting the signal line.

2 The output signal of the graphics card is unstable. This problem is mostly seen in analog signals. If the monitor has a DVI interface, it is recommended that the user use a DVI signal cable to connect the monitor;

3. The graphics card driver is incompatible or damaged. Reinstall or upgrade the graphics card driver.

4. There are problems with the monitor itself, poor control during the production process of the LCD panel (Panel), and defects in the software program (firmware) of the monitor, etc., which may cause water ripple problems.

How to solve the problem of computer screen always shaking

This problem is caused by the computer's refresh rate being too low or the graphics card driver not being installed: Right-click My Computer--Properties--Hardware--Device Manager--Check if there is an exclamation mark or question mark in it. device, if the graphics driver is not installed, just install the graphics driver. Check whether the refresh rate is set too low. Right-click on a blank space on the desktop--select "Properties"--Settings--Advanced--Monitor-- Just adjust the screen refresh rate to 75 Hz or 85 Hz.

There are many reasons that can cause the screen to shake or flicker, please try the following:

1. Check the refresh frequency: The jitter or flicker of the display screen is most likely caused by the system's display parameters not being set properly. For example, once the refresh frequency is set too low, the screen may also jitter or flicker; in order To confirm whether the refresh frequency of the monitor is set too low, please right-click a blank area of ​​the system desktop and click the "Properties" command from the pop-up right-click menu to enter the monitor's property settings window.

2. Check whether there is interference from strong electric fields or strong magnetic fields near the computer: The jitter or flicker of the screen may also be caused by the magnetic field or electric field near the monitor; you can eliminate all interference around the monitor to see if there is a fault. be excluded.

3. Check whether there is a problem with the graphics card driver: If the graphics card driver version is too old, it may also cause the screen to shake or flicker. You can download the latest version of the driver for the corresponding network card from the Internet, then open the system's properties window, click the "Device Manager" button to enter the system's device list interface; right-click the display card in the interface option, click the "Properties" command from the pop-up right-click menu, then click the "Driver" tab in the pop-up graphics card property settings window, and then click the "Update Driver" button in the corresponding tab page. The wizard prompts you to update the graphics card driver to the latest version step by step, and then restart the computer to see if the problem can be resolved.

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