Your Dell monitor may be experiencing an LCD display or video issue usually caused by either the monitor, video card (GPU) or video settings. The troubleshooting steps below can help resolve common issues. Some symptoms that indicate an LCD display or video issue are a blank or black screen, color fade, fuzzy, blurry, distorted or stretched image, geometric distortion, light leakage or light bleeding, flickering, horizontal or vertical lines, light or dark patches, dead pixel or bright pixel. To learn more, expand and follow each troubleshooting step below.
To learn how to troubleshoot LCD display or video issue on a Dell laptop PC, refer to the Dell knowledge-base article Troubleshooting Display or Video Issues on Dell Laptop LCD Panel
It is essential to verify if the problem is inherent with the monitor, video card (GPU) or video settings on your PC. A straightforward way to identify this is to connect the PC to a known-good external monitor or TV and ensure that the display (S-video, VGA, DVI, HDMI or DisplayPort) cables are firmly connected to the video ports on the PC and the monitor.
To learn more about connecting your Dell PC to a monitor or TV, refer to the Dell knowledge-base article How do I Connect a Monitor or TV to a PC?.
If the issue persists on the other monitor it may be due to the video card (GPU) or video settings and not the monitor, proceed to the step Verify display or video issue in Windows Safe Mode. Else proceed to the next step.
Performance issues may occur if there is any type of damage caused to the display cables or the LCD screen. LCD screen may show symptoms like LCD screen stops working, work intermittently, color mismatch, flickering, display horizontal or vertical lines, etc. if there is a damage to the display cables or the LCD screen.
If you do notice a physical damage, contact Dell Technical Support to learn more about repair options that are available in your region. If there is no damage, proceed to the next step.
Dell monitors provide a self-test feature check (SFTC) and a built-in self test (BIST) diagnostic tool that helps determine if the screen abnormality you are experiencing is an inherent problem with the Dell monitor or with the video card (GPU) and PC settings.
When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines, color fade etc, it is always a good practice to isolate the monitor by running a diagnostic check on the Dell monitor.
To learn more about running a diagnostic check on your Dell monitor, refer to the Dell knowledge-base article How do I Run Diagnostics on a Dell Monitor?
To reset a Dell monitor to factory default settings, follow these instructions:
Windows Safe Mode allows us to identify if the issue is related to the operating system, video settings, device drivers or a 3rd party software. To learn more about how to boot your Dell PC into Safe Mode, refer to the Dell knowledge-base article below based on the operating system installed on your PC:
If the issue persists in Safe Mode, proceed to the next step. Else, proceed to Perform a Windows System Restore.
Starting Windows 10 in Safe Mode (Official Dell Tech Support) on YouTube - (1:16) English Only
Dell recommends updating the device drivers and BIOS as part of your scheduled update cycle. These device drivers and BIOS updates may contain feature enhancements or changes that will help keep your system software current and compatible with other system modules (hardware and software) as well as increased stability.
It is essential to update the following device drivers for optimal video performance and to resolve common video issues:
To learn more about downloading and installing a device driver on a Dell PC, refer to the Dell knowledge-base article How do I update the device drivers on a Dell PC?.
Windows updates can support your Windows operating system in many ways. Windows updates can solve specific problems, provide protection from malicious attacks, or even add new features to the operating system.
Display settings like brightness, refresh rate, resolution and power management may affect the performance of your Dell monitor. Changing the display settings can help resolve several types of video issues.
To learn more about changing the brightness, refresh rate and resolution on a Dell PC, refer to the Dell knowledge-base article How do I Change Common Video Settings in Microsoft Windows?.
If you find that the Dell touch-capable monitor is unresponsive to touch or touch works intermittently, you can try some common troubleshooting steps to help fix the issue.
To learn more about touchscreen troubleshooting, refer to the Dell knowledge-base article Troubleshooting Touchscreen Issues on a Dell PC.
Troubleshooting Touch Issues in Windows 10 - (1:45) English Only
Stress Test can thoroughly diagnose the video card (GPU) on your PC and report any potential hardware problem. Running a stress test on your PC can verify if the hardware components are stable and thus reliable.
Dell SupportAssist Diagnostic Tests (Official Dell Tech Support) on YouTube - (1:30) English Only
System Restore is a built-in Windows tool designed to protect and repair the operating system. When something goes wrong with your PC, System Restore should be used prior to restoring the PC to factory defaults.
Select the Operating System installed on your PC to find more information about how to perform System Restore:
If the diagnostic tests on the Dell monitor and video card (GPU) passed, it is most definitely an issue related to software installed on your PC. If the above troubleshooting steps did not resolve the issue, you could try to restore your PC to factory defaults as a last resort.
Dell PCs are built with a small amount of hard disk space reserved for reinstalling your operating system. This method is the easiest way to restore your PC to factory condition. The restoration process deletes all user data from the PC, so be sure to back up all of your files prior to starting this process
Select the Operating System installed on your PC to find more information about how to restore your PC to factory defaults:
Perform a Reset in Windows 10 - (1:36) English Only
To learn about different types of video ports or connectors on a Dell PC, refer to the Dell knowledge-base article Guide to Ports, Connectors, and Cables on Dell PCs or How do I connect a monitor to a PC?.
Article ID: SLN130763
Last Date Modified: 02/25/2019 11:30 AM
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