How to fix horizontal or vertical lines on Dell Monitor?
- IireyesSep 7, 2025
To resolve horizontal or vertical lines on your Dell monitor, try these steps: Reset the monitor to Factory Settings. Perform Auto Adjust via the OSD. Adjust Phase and Pixel Clock controls via the OSD. Perform a monitor self-test feature check to determine if these lines are also in self-test mode. Check for bent or broken pins in the video cable connector.