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Dell Monitor Flickering

Computers have become central to our lives recently. Whether you are working from home, trying to finish your schooling, or enjoying an online video game, it is essential to have a properly working monitor.

A Dell monitor may flicker due to an incompatible or outdated graphics driver. Update the driver by going to the Device Manager, expanding the ‘Display adapters’ section, right-clicking on your graphics card, and selecting ‘Update driver’. Choose ‘Search automatically for updated driver software’ and follow the prompts. Restart your computer after the update to see if the flickering stops.

Monitor settings can also contribute to flickering. If the refresh rate of the monitor is set incorrectly, it can cause the display to flicker. Access the monitor settings through the on-screen display (OSD) menu and ensure the refresh rate is set to the specification recommended by Dell for your particular model. For Windows, you can adjust the refresh rate by going to ‘Settings’ > ‘System’ > ‘Display’ > ‘Advanced display settings’. Select the correct rate from the drop-down menu and save your changes. A correct refresh rate can provide a stable display without flickering.

Dell monitor in desk table

With a little detective work, you can narrow down the issue with your monitor. This article will help you determine if the issue is with your Dell monitor or the computer. Some solutions are simple and will resolve the problem. Others may require the help of a Dell technical support professional.

Dell Monitor Flickering

A malfunctioning monitor is not only stressful but is also harmful to the eyes. A flickering screen can cause great eye strain, even migraines.

The Dell monitor will flicker if the video cable connecting the monitor to the computer is defective. A defective cable will cause the signal to break while being transmitted from the computer to the monitor. This break in transmission will cause the screen to flicker.

A flickering screen could be caused by a problem with either the monitor or the computer. The color of the indicator light on the monitor will help narrow down the cause of the flickering. If the indicator light is green or amber, the problem could be with the computer, not the monitor.

When the screen flickers, disconnect the video cable. If a message appears saying “no signal could be found”, the video adapter is faulty. If the indicator light on the monitor is off, then the monitor is defective.

APP Incompatibility

If your Dell computer and monitor are older, the computer might not be able to handle the parameters and specs of certain apps. If the computer cannot support the newer specs, the strain could cause the screen to flicker.

To test this possibility, open the Task Manager and watch for any flickering. If everything on the screen flickers except for the Task Manager display, this means there is an incompatible app on your computer.

If only the Task Manager display flickers, you are dealing with a more serious issue. There could be a hardware issue that requires the assistance of Dell Technical Support.

Dell Monitor Flickering After Power Outage

Confused woman while looking at her monitor

The only thing worse than having the power go out while you’re on your computer is having the power come back on and now your computer screen flickers.

A Dell monitor will flicker after a power outage if there is damage between the flexible circuit board and the monitor glass. The surge in power can cause stress to the flex circuit, causing it to detach from the glass.

The monitor has a built-in diagnostic tool you can test to determine if the problem is with the Dell monitor. Follow the steps outlined below to do a self-test.

Step 1: Turn off the monitor.

Step 2: Disconnect all cords and cables between the monitor and computer.

Step 3: Press and hold the monitor power button for 5 seconds.

Step 4: Reconnect power to the monitor and turn it on.

Step 5: A multicolored dialogue box should appear. If it does not appear, the monitor

Is defective and will need to be replaced.

Dell Monitor Flickering On And Off

Frustrated man while looking at the monitor

There are several reasons why a monitor will flicker. One of the simplest reasons is the screen needs to be refreshed. Shut down the computer and monitor to see if the issue is resolved.

Your Dell monitor will flicker if there is too much outside interference. Remove anything that could cause interference, such as a baby monitor or cameras. Move any electrical devices, including computer speakers and surge protectors, away from the monitor.

A video card driver is software that sends signals to the computer’s graphics hardware, resulting in an image on the monitor. If the graphic driver is outdated, it will affect the quality of the monitor display. You can update your computer’s graphics drivers by following the steps outlined below:

Step 1: Go to your computer’s Device Manager.

Step 2: Scroll down to Display Adapters.

Step 3: Double click on the device listed.

Step 4: Select the Driver tab.

Step 5: Update the driver.

Dell Monitor Flickering Horizontal/Vertical Lines

Frustrated man while looking at the monitor

Horizontal or vertical lines could be an indication of damage, a graphics system failure, or loose internal video cables. If any of these areas are damaged, the quality of the picture being displayed will be affected.

If your Dell monitor is flickering with horizontal or vertical lines, the connection between the computer and the monitor could be faulty. A faulty connection will disrupt the image being displayed. If the screen flickers when you move the cables, replacing the cables will resolve the issue.

Another possibility for your Dell monitor to have horizontal or vertical lines is if the monitor’s color settings need to be reset. You can adjust these settings by going to your computer’s CONTROL PANEL > APPEARANCE AND PERSONALIZATION > DISPLAY > CALIBRATE COLOR.

Dell Monitor Flickering At Top Of Screen

Frustrated man while looking at the monitor

A flickering screen could be a sign your monitor is trying to adjust either the color or size settings. Newer apps require higher specs to have the best performance. Uninstall any new software to see if this is the cause of the monitor flickering.

If your Dell monitor is flickering at the top of the screen, make sure the cables connecting the monitor to the computer are good. If your monitor is connected with an HDMI cable, try connecting your monitor with a DVI or VGA cable.

Performing a self-test on your computer will help you determine the health of your monitor. First, go to and find your monitor’s model. In the User Guide next to your monitor, the Troubleshooting section will provide instructions on performing a Self-Test.

Dell Monitor Flickering Edges

Frustrated woman while in the workplace

Flickering edges on your monitor could be a sign there is damage to the video cable. Check the cable for loose or bent pins. If the pins are damaged or missing, replacing the cable will hopefully solve the problem.

If your Dell monitor is flickering, adjust the monitor’s screen settings. Adjusting the screen’s alignment, color, brightness, and contrast will allow you to correct common screen misalignments that can cause the monitor to flicker.

Another reason for a monitor to flicker is if the Screen Refresh Rate is too low. If the refresh rate is too low, the screen will flicker each time it tries to refresh the images. The most common refresh rate is 60 Hz.

If your monitor is an older CRT monitor, you will need to manually adjust this rate. You can do this by following these steps:

Step 1: Go to the Start button.

Step 2: Enter “Adjust Screen Resolution” in the search bar and press Enter.

Step 3: Click Advanced Settings.

Step 4: Select the Monitor tab.

Step 5: Adjust the refresh rate.

For newer monitors, go to your computer’s SETTINGS and then to SYSTEM. Choose the DISPLAY option. Scroll down to ADVANCED SETTINGS and then select REFRESH RATE.

Dell Monitor Flickers And Goes Black

Frustrated woman while in the workplace

A software compatibility issue will cause your computer to lose its internet connection. Losing this connection will cause the monitor to flicker and then go black. Follow the steps above to test the Task Manager for compatibility issues.

Your Dell monitor will flicker and go black if a power surge has disrupted the signal coming from the computer to the monitor. Turn off the monitor and remove the cables. This will give the monitor a few seconds to reset.

Copyright protected content owner: and was initially posted on October 20, 2021.

Computer monitors are smaller and more compact than they were decades ago. With so many working parts in a confined space, there is bound to be an issue with overheating. High usage, even a build-up of dust on the fan can cause the monitor to overheat and shut off.

If you work in a confined space or somewhere with little ventilation, keep a small fan close by to help circulate air. Use a can of compressed air to clear away any dust that has built up on the fan. These two simple things will help your Dell monitor function better.

Dell Monitor Flickering Pixels

Angry woman while holding the monitor

Flickering pixels are only fun if you’re playing with glitter and are 12. If your Dell monitor is exhibiting signs of flickering pixels there is most likely an issue with the color display settings.

Depending on the color of the flickering pixels, your Dell monitor may be trying to overcorrect certain colors. Adjusting the brightness, color, and contrast of your screen display will offset the flickering.

As mentioned earlier, if the screen refresh rate is too low, the screen will flicker each time it tries to refresh. If you are a gamer, a higher refresh rate is needed for your monitor to keep up. The refresh rate is largely determined by the capabilities of the monitor.

Copyright article owner is for this article. This post was first published on October 20, 2021.

If your Dell monitor is displaying flickering pixels, there could be an internal hardware issue. Try connecting the monitor to another computer to see if the problem goes away or remains. If the issue persists, call Dell Technical Support to see if a replacement or repair is needed.

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ReadyToDIY is the owner of this article. This post was published on October 20, 2021.

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