How to deal with vertical lines on the display

Check the connection cable → Update the driver → Detect the hardware
‌The solution to vertical lines on the display can be summarized into three steps: hardware inspection, software adjustment and hardware repair. ‌The following is a specific solution:

1. Basic troubleshooting and connection inspection
‌Check the signal cable and interface‌

Replug the connection cable between the monitor and the computer (HDMI/DP/VGA, etc.) to ensure that the interface is not loose, oxidized or dusty.
Replace other cables for testing to eliminate the possibility of cable aging or damage.
‌Observe the monitor self-test screen‌

Disconnect from the computer. If there are still vertical lines on the self-test interface, it may be a hardware failure of the monitor (such as panel damage).
2. Software and settings adjustment
‌Update the graphics card driver‌

Use the driver management tool (such as Driver Life) to automatically detect and update the graphics card driver, or go to the graphics card official website to manually download the latest driver.
If the problem is not solved after the update, try uninstalling the driver and reinstalling it.
‌Adjust the resolution and refresh rate‌

In the system display settings, adjust the resolution to the recommended value of the monitor and set the refresh rate to 60Hz or other compatible parameters.
‌Check software conflicts and system problems‌

Close conflicting programs running in the background, or use system repair tools (such as Windows SFC scan) to check system anomalies.
3. Hardware troubleshooting
‌Check graphics card and display hardware‌
If the problem persists after replacing the cables and drivers, try plugging the graphics card into the PCIe slot of another motherboard, or replace the spare graphics card for testing.
‌If there are still vertical lines on the self-test interface, contact after-sales service to repair the monitor LCD panel or internal circuit‌.
Key conclusions
It is recommended to perform the above steps in order. If the initial troubleshooting is ineffective, give priority to hardware failures of the monitor or graphics card, which require professional treatment.