Symptoms

Quick Links Getting Started with your Dell Monitor Dell U2720Q Setup, Specifications and Service Manual Dell Drivers & Downloads Warranty and Support Services Frequently asked questions For help with video or display issues, refer to an expanding section below.

Cause

Show all | Hide all Key features of Dell U2720Q Monitor The key features of Dell U2720Q monitor are: 3480 x 2160 (16:9) resolution, plus full-screen support for lower resolutionsDisplay HDR 4000.3 W standby power when in sleep modeOn-Screen Display (OSD) adjustments for easy setup and screen optimization.Plug and play capable if supported by your computer.Tilt, swivel, height, and rotating adjustment.Optimize eye comfort with a flicker-free screen.Security-lock slot (optional) Warning: The possible long-term effects of blue light emission from the monitor may cause damage to the eyes, including eye fatigue or digital eye strain. ComfortView feature is designed to reduce the amount of blue light that is emitted from the monitor to optimize eye comfort. Dell U2720Q Monitor Specifications This section provides some specifications of the Dell U2720Q monitor. To learn more about the specifications of the Dell U2720Q monitor, refer to the User's Guide at the Dell Manuals website. Panel technology In-Plane Switching Maximum resolution 3840 x 2160 at 60 Hz (16:9 aspect ratio) Viewing angle 178° (vertical) typical178° (horizontal) typical Contrast ratio 1300 to 1 (Typical) Response time (Milliseconds) 8 milliseconds (Normal)5 milliseconds (Fast) Color gamut 99% sRGB, 99% Rec 709, 95% DCI-P3 Color depth 1.07 Billion colors Ports and connectors 1 x DP 1.4 (HDCP 1.4/HDCP 2.2) (Recommended Input)1 x HDMI 2.0 (HDCP 1.4/HDCP 2.2)1 x USB Type-C (Alternate mode with DisplayPort 1.4, USB 3.0 upstream port, Power Delivery PD up to 90 W)2 x USB 3.0 downstream port1 x USB 3.0 downstream port with BC1.2 charging capability at 2 A (max)1 x Analog 2.0 audio line out (3.5 mm jack)1 x USB 3.0 Type-C downstream port with charging capability at 3 A (max) Setting up your Dell U2720Q Monitor Ensuring that your Dell monitor is set up properly - assembling the monitor stand and setting up the monitor ergonomically, connecting the cables and organizing them, will only help make the viewing experience the best it possibly can be. Attaching the stand The standard monitor stand is detached when the monitor is shipped from the factory. To learn more about attaching the standard monitor stand, refer to the Setting Up the Monitor section in the User's Guide of your Dell U2720Q monitor.To learn how to set up any other stand with a monitor, refer to the respective stand setup guide for setup instructions. Caution: Do not remove the monitor from the packaging box before attaching the stand. Note: The Dell U2720Q monitor and stand is 6.6 kg; handle with care when you lift or move this monitor. Ergonomics Where you put your monitor is almost as important as what model you buy. The monitor should be directly in front of you, at an arm’s length away (between 20-40 inches from your eyes), with the top edge of the screen at eye level when you are sitting comfortably. You may need to adjust your chair height or the height of the monitor to achieve this. Connecting your monitor to the personal computer To connect your Dell U2720Q monitor to your personal computer: Turn off your personal computer and disconnect the power cable. Connect the DisplayPort, or VGA cable to the corresponding video or display port on the back of your personal computer. To learn more about connecting your monitor to the personal computer, refer to the Dell knowledge-base article. How do I connect a monitor to a personal computer? Using the On-Screen Display (OSD) Menu Use the buttons at the bottom of the monitor to access the On-Screen Display (OSD) menu of the monitor. To access the On-Screen Display (OSD) menu, press Button 5 (Figure 1) at the bottom of the monitor. To learn more about how to use the On-Screen Display (OSD) menu, refer to the Operating Your Monitor section in the User's Guide of Dell U2720Q monitor. Note: Any changes that you make are automatically saved when you move to another menu item, exit the OSD menu, or wait for the OSD menu to automatically close. Figure 1: Dell U2720Q Front Panel Buttons ButtonFunctionDescriptionButton 1Shortcut key/Preset ModesUse this button to choose from a list of preset color modes.Button 2Shortcut key/Brightness/ContrastUse this button to adjust the brightness and contrast. Minimum is '0' (-). Maximum is '100' (+).Button 3MenuUse the MENU button to launch the On-Screen Display (OSD).Button 4ExitUse this button to exit the OSD main menu.Button 5Power power button (with LED indicator).A solid white light indicates that the monitor is On and fully functional. Blinking white light indicates the power save mode. Figure 2: Dell U2720Q OSD Controls ButtonFunctionDescriptionButton 1UpUse the Up button to increase values or move up. in a menuButton 2DownUse the Down button to decrease values or move. down in a menuButton 3OKUse the OK button to confirm your selection in a menu.Button 4BackUse the Back button to go back to the previous menu. Reset Dell U2720Q Monitor to Factory Settings Resetting a monitor to factory defaults can help resolve many video or display issues. To reset your Dell U2720Q monitor to factory default settings, follow these instructions: Press Button 3 (Figure 2) on the monitor to enter the On-Screen Display (OSD) Menu.Press Button 1 or Button 2 to highlight Others option in the menu and press Button 3 to select.Press Button 1 or Button 2 to highlight Factory Reset option in the menu and press Button 3 to select.Press Button 3 to confirm the reset action. Figure 3: Dell U2720Q OSD Controls Running Diagnostics on Dell U2720Q Monitor If your Dell monitor has a blank or black screen, fuzzy or blurry image, flickering, distorted or any other screen abnormalities, running a diagnostic test helps determine if the Dell monitor is functioning normally. To learn more about diagnostic options on a Dell monitor, refer to the Dell knowledge-base article. How do I run diagnostics on a Dell monitor? It is always essential to isolate the monitor while troubleshooting your computer for the following scenarios: No Power - Your computer is not powering ON or showing any signs of power. No POST - Your computer is not showing any indication of activity, the screen might be blank and will not display the Dell logo during start-up. No Video - You are unable to see any display on the screen, able to hear the windows chime but no display is seen. Self-Test Feature CheckBuilt-In Self-Test Your Dell U2720Q Monitor provides a self-test feature check that allows you to check whether the monitor is functioning properly. If the monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps: Turn off both your computer and the monitor.Unplug the video cable from the back of the computer. To ensure proper Self-Test operation, remove the video cables (VGA, DVI, HDMI, or DisplayPort) from the back of the computer.Turn on the monitor.Turn off your monitor and reconnect the video cable: Then turn on both your computer and the monitor.If your monitor screen remains blank after you use the previous procedure, check your video card (GPU) and computer, because your monitor is functioning properly. Your Dell U2720Q monitor has a built-in diagnostic tool that helps to determine if the screen abnormality you are experiencing is a problem with the monitor or with the video card on your computer. When you notice screen abnormalities like distortion, clarity, horizontal or vertical lines, color fade, it is always a good practice isolating the monitor by running the Built-In Diagnostics. Ensure that the screen is clean (no dust particles on the surface of the screen).Unplug the video cables from the back of the computer or the monitor. The monitor will now enter self-test mode.On the front panel, press and hold Button 1 on the front panel for 5 s. A gray screen appears.Carefully inspect the screen for abnormalities.Press Button 1 on the front panel again. The color of the screen changes to red.Inspect the display for any abnormalities.Repeat step 5 and step 6 to inspect the display in green, blue, black, white, and text screens.The test is complete when the white screen appears.Press Button 1 to exit the Built-In Self-Test diagnostics. Note: If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the monitor is functioning properly. Check the video card (GPU) and the computer.If you notice any abnormalities during Built-In Diagnostics, you may get the monitor repaired/replaced if it is under warranty by contacting Dell Technical Support. Dell LCD Monitor Pixel Guidelines During the LCD Monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state which is hard to see and do not affect the display quality or usability. For more information, refer to the Dell knowledge-base article Dell LCD Monitor Pixel Guidelines. Common Troubleshooting Steps This section provides information about troubleshooting steps that can help resolve the most common issues with the Dell U2720Q monitor. Alternatively, to learn more about troubleshooting common issues on Dell monitors, refer to the Dell knowledge-base article Troubleshooting Display or Video Issues on a Dell Monitor. Common ProblemWhat User ExperiencesPossible SolutionNo Video - Power LED OffNo picture Ensure that the power cable connecting the monitor is properly connected and secure.Verify that the power outlet is functioning properly using any other electrical equipment.Ensure that the power button is depressed fully.Test with known good cable and known good computer if possible. No Video - Power LED OnNo picture or no brightness. Increase the brightness and contrast of the monitor through the On-Screen Display Menu (OSD).Perform monitor self-test feature check.Check for bent or broken pins in the video cable connector.Reseat both ends of the video cable.Try with a known good video cable.Run the built-in diagnostics.Ensure that the correct input source is selected over the Input Source Select button.Test monitor with a known good computer if available. Poor FocusThe picture is fuzzy, blurry, or ghosting. Reseat both ends of the video cable.Try with a known good video cable.Perform Auto Adjust over On-Screen Display Menu (OSD).Adjust the Phase and Pixel Clock controls over On-Screen Display Menu (OSD).Eliminate video extension cables.Reset the monitor to Factory Settings. Shaky/Jittery VideoWavy picture or fine movement. Perform Auto Adjust over On-Screen Display Menu (OSD).Adjust the Phase and Pixel Clock controls over On-Screen Display Menu (OSD).Reset the monitor to Factory Settings.Check for environmental factors (like fans or other sources of interference).Relocate the monitor and test it in another room. Missing PixelsThe LCD screen has spots. Cycle power on-off.Pixel that is permanently off is a natural defect that can occur in LCD technology.Run the built-in diagnostics. Stuck-On/Off PixelsThe LCD screen has a bright spot. Cycle power on-off.A few permanently bright or dark pixels are considered normal by industry standards. The exact number of pixels that are allowed varies depending on the monitor. Refer to Dell Monitor Quality and Pixel Policy for more details.Run the built-in diagnostics. Brightness ProblemsPicture too dim or too bright. Dim/discolored video can be caused by the video cable, so try reseating the cable and swapping with a known good part.Reset the monitor to the Factory Settings.Perform Auto Adjust over On-Screen Display Menu (OSD).Adjust the Brightness/Contrast controls over the On-Screen Display Menu (OSD). Geometric DistortionScreen not centered correctly. Reset the monitor to Factory Settings.Perform Auto Adjust over On-Screen Display Menu (OSD).Adjust the Brightness/Contrast controls through the On-Screen Display Menu (OSD). Note: When using DisplayPort input, the positioning adjustments are not available. Horizontal/Vertical LinesThe screen has one or more lines. Reset the monitor to the Factory Settings.Perform Auto Adjust over On-Screen Display Menu (OSD).Adjust Phase, and Pixel Clock controls over On-Screen Display Menu (OSD).Perform monitor self-test feature check and determine if these lines are also in self-test mode.Check for bent or broken pins in the video cable connector.Run the built-in diagnostics. Note: When using DisplayPort input, the positioning adjustments are not available. Synchronization ProblemsThe screen is scrambled or appears torn. Reset the monitor to the Factory Settings.Perform Auto Adjust over On-Screen Display Menu (OSD).Adjust Phase, and Pixel Clock controls over On-Screen Display Menu (OSD).Perform monitor self-test feature check to determine if the scrambled screen appears in self-test mode.Check for bent or broken pins in the video cable connector.Restart the computer in the power safe mode. Safety-Related IssuesVisible signs of smoke or sparks. Do not perform any troubleshooting steps.Contact Dell Technical Support immediately. HDR ProblemsCannot set GFX solution into HDR mode after switching into Desktop/Movie HDR/Game HDR/DisplayHDR Presets. Ensure that your computer or graphics solution meets the minimum requirement for HDR playback and install the latest software drivers for the graphics card.Ensure that the HDMI 2.0 cable that comes with the package is usedIf the above steps fail, choose the resolution 3840 x 2160 from the Display Properties to force the Proper HDR signaling Intermittent ProblemsMonitor malfunctions on and off. Ensure that the video cable is connected properly with the monitor and the computer.Reset the monitor to the Factory Settings.Run the self-test feature and determine if the intermittent problem occurs in the self-test mode. Missing ColorThe picture does not have color. Run the monitor self-test feature check.Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.Check for bent or broken pins in the video cable connector. Wrong ColorPicture color is not good. Change the color-setting mode in the Color Settings On-Screen Display Menu (OSD) to Graphics or Video, depending on the application.Try a different color preset setting in the Color Settings On-Screen Display Menu (OSD).Adjust the R, G, B value in the Color Settings OSD, if Color Management is turned off.Change the input color format to personal computer RGB or YPbPr in the Color Settings On-Screen Display Menu (OSD).Run the built-in diagnostics. Image Retention from a Static Image Left on the Monitor for a Long PeriodFaint shadow from the static image appears on the screen. Use the Power Management feature to turn off the monitor when it is not in use.Alternatively, use a dynamically changing screensaver. Screen image is too small.Image is centered on the screen but does not fill the entire viewing area. Check the Aspect Ratio setting in the On-Screen Display Menu (OSD).Reset the monitor to the Factory Settings. No Input Signal when user controls are pressed.No picture, the power LED light is white. Check the signal source. Ensure that the computer is not in power-saving mode by moving the mouse or pressing any key on the keyboard.Ensure that the video cable is connected properly with the monitor and the computer.Restart the computer. The picture does not fill the entire screen.The picture cannot fill the height or width of the screen. Due to different video formats (aspect ratio) of DVDs and videos, the monitor may display in the screen.Run the built-in diagnostics. No video at HDMI/DisplayPort/USB Type-C portWhen connected to some dongle/docking device at the port, there is no video when unpluging/pluging the Thunderbolt cable from the laptop.Unplug the HDMI/DisplayPort/USB Type-C cable from dongle/docking device, then plug the docking Thunderbolt cable to the laptop. Plug the HDMI/DisplayPort/USB Type-C cable 7 s later.USB interface is not working.USB devices are not working. Check that your monitor is turned On.Reconnect the upstream cable to your computer.Reconnect the USB devices (downstream connector).Switch Off and then turn On the monitor again.Reboot the computer.Some USB devices like external portable hard drive require higher electric current; connect the device directly to the computer. USB Type-C port does not supply power.USB devices cannot be charged. Check that the connected device is compliant with the USB-C specification. The USB Type-C port supports USB 2.0 and an output of 90 W.Check that you use the USB Type-C cable that is shipped with your monitor. Intermittent charging when using USB Type-C connection to computer, laptop, and so onIntermittent charging Check if the maximum power consumption of Device is over 90 W.Ensure that you use only Dell approved adapter or the adapter that comes with the product.Ensure that the USB Type-C cable is not damaged. No image when using DP connection to the personal computerBlack Screen Verify which DP standard (DP 1.1a or DP 1.4) is your Graphics Card that is certified to. Download and install the latest graphics card driver.Some DP 1.1a graphics card cannot support DP 1.4 monitors. Go to OSD menu, under Input Source selection, press and hold DP select key for 8 sec to change the monitor setting from DP 1.4 to DP 1.1a. Documentation To learn more about how to view or download the User Guides and Manuals for your Dell product, refer to the Dell knowledge-base article Manuals and Documentation for your Dell Product. Dell U2720Q - User’s GuideDell U2720Q - Quick Setup GuideDell U2720Q - Dell Display Manager User’s Guide

Resolution

Frequently asked questions How do I set the maximum resolution on the Dell U2720Q monitor? Using Windows Display Settings In Windows 10, Windows 8 or 8.1 and Windows 7: For Windows 8 and Windows 8.1 only, select the Desktop tile to switch to classic desktop view.Right-click the desktop and click Screen Resolution.Click the dropdown list of the Screen Resolution and select 3840 x 1160.Click OK Using the Nvidia Control Panel To change the resolution using the Nvidia Control Panel: Right-click the desktop and click Nvidia Control Panel.Click the + symbol next to Display on the left pane.Select Change Resolution under Display.In the dropdown menu on the right pane, select the resolution 3840 x 2160.Click Apply. Using the AMD Catalyst Control Center To change the resolution using the AMD Catalyst Control Center: Right-click the desktop and click AMD Catalyst Control Center.Click the + symbol next to Display on the left pane.Select Change Resolution under Display.In the dropdown menu on the right pane, select the resolution 3840 x 2160.Click Apply. Note: If you do not see the recommended resolution as an option, you may need to update the video card (GPU) driver by visiting the Dell Drivers & Downloads website or the video card (GPU) manufacturers website. To learn how to download and update a device driver, refer to the Dell knowledge-base article. How do I download and install a device driver? How do I reset the Dell U2720Q monitor to factory defaults? To reset the Dell U2720Q Monitor to factory defaults, refer to the Reset to Factory Settings section of this article. How do I run a diagnostic on the Dell U2720Q monitor? The Dell U2720Q monitor has two built-in diagnostics that are available: Self-Test Feature Check - The self-test feature check on the Dell U2720Q monitor allows you to check whether the monitor is functioning properly. Built-In Self-Test - The Dell U2720Q monitor has a built-in self-test that helps you identify if the screen abnormality is with the monitor or the video card (GPU) on your computer. When you notice screen abnormalities like distortion, clarity, horizontal or vertical lines, color fade, isolate the monitor by running the Built-In Diagnostics. To learn how to run a diagnostic test, refer to the Running Diagnostics on Dell U2720Q Monitor section of this Dell knowledge-base article. How do I troubleshoot common issues with the Dell U2720Q monitor? The Troubleshooting section of this Dell knowledge-base article provides information about troubleshooting common issues with the Dell U2720Q monitor. How do I navigate the On-Screen Display menu? To navigate the On-Screen Display (OSD) menu, use the buttons on the monitor. The monitor control buttons are usually on the right-hand side, either on the side, front, or bottom of the monitor. To access the On-Screen Display (OSD) menu, press Button 3 on the monitor. For information about the On-Screen Display (OSD) menu, refer to the Operating Your Monitor section in the User's Guide of your Dell U2720Q monitor.

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