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What causes monitor flickering?

Mar 13, 2023 am 11:45 AM
monitorsplash screen

The reasons for monitor flickering are: 1. Magnetic field interference; 2. Computer viruses will disrupt the screen display; 3. Incorrect refresh rate setting; 4. Incorrect graphics card driver; 5. Poor contact of the graphics card; 6. The screen wiring is not normal, etc.

What causes monitor flickering?

#The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

What is the reason for the screen flickering?

Flashing screen generally refers to a display problem on a computer monitor. When the computer is running, the screen flickers or flashes irregularly, and sometimes horizontal and vertical lines appear. Splashing screen and snowflake screen are mainly caused by problems with the graphics card. Snowflake screen is similar to the snowflake screen on TV. Splashing screen is like a problem with the graphics card driver. The picture is complete, but it is extremely uncomfortable for the eyes. Therefore, the graphics card should be inspected first, but problems with the monitor itself cannot be ruled out.

Phenomena

When the computer is running, the screen may flicker or flash irregularly, and sometimes horizontal and vertical lines may appear, or even a white screen may appear.

Explanation

1. The screen flashed suddenly

2. The screen flickered or flickered irregularly

3. The screen appears full of vertical lines

Cause

Flashing screen and snowflake screen are mainly caused by problems with the graphics card. The main problem of notebook screens is dead pixels. Before buying, be sure to ask the merchant to confirm the number of defective pixels. The snowflake screen is similar to the snowflake screen of a TV. The flickering screen is like a problem with the graphics card driver. The picture is complete, but it is extremely uncomfortable for the eyes.

  • Magnetic field interference

Put the computer in an environment without a strong magnetic field to see if there will be screen flickering

  • Complete anti-virus

Some computer viruses will disrupt the screen display, causing character inversion, screen jitter, and other problems

  • Refresh The rate setting is incorrect

The refresh rate is set too low, which will cause the screen to shake

Right-click the blank area of ​​the system desktop---click "Properties"-- -Click "Settings"---Click the "Advanced" option, select the "Monitor" tab in the pop-up display advanced property settings interface, if you see the display's refresh frequency setting value is less than "60", set the frequency to " 60” or slightly higher.

  • Incorrect graphics card driver

If you find that there is no refresh frequency to choose from, this is due to the graphics card's driver being incorrect or too old. Caused. At this time, do not use the driver in the CD that came with the computer when you purchased it. Go to the Internet to download the latest version of the driver corresponding to the display card. After updating the driver, restart the computer. If the driver is properly installed, the display refresh rate option will appear. Then set the refresh rate to 75Hz or above.

  • Poor contact with the graphics card

If it is an independent graphics card, disassemble the machine, take out the graphics card, clean the golden finger with an eraser, and the slot will also be Clean it and plug it back in.

  • Also check the screen cable.

For more related knowledge, please visit the FAQ column!

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