You’ll either be using a VGA, HDMI, or DisplayPort input most of the time. If you’re not very techy, you can seek the help of an expert with identifying the correct source. It’s important to check what input source to use when connecting your monitor. If you made the connection with VGA cables and selected HDMI as the input source, you’ll get no signal errors. Since a monitor typically has many input ports, you must select the correct input source to display any video. You can also update all your drivers by running all optional Windows updates. If you think Device Manager didn’t fetch the latest drivers, consider scanning your computer with a driver updater like DriverEasy. You can update your graphics card drivers from the Windows Device Manager. The update should usually include support for new monitors and resolutions, of which your Dell monitor might be part. If you’re getting no-signal errors with a new graphics card, consider updating your graphics card to see if it works. Newly-installed graphics cards typically require software updates to work well with your monitors. If you’re changing your graphics card and your monitor simultaneously, that may likely the problem. Since your computer’s graphics card controls all external monitors, your Dell monitor won’t work well with a faulty graphics card. Alternatively, you can contact Dell Support with the monitor’s model number to determine its correct resolution. With the correct drivers, your monitor should default to the proper resolution automatically. To get the correct resolution for your monitor, consider going through the manual or updating the drivers. It’s important to note that the video resolution in safe mode is usually lower than your computer’s capability. If the monitor works fine in safe mode, you may have gotten the resolution wrong. To determine if the error results from setting the resolution too high, try booting in safe mode. You can check the resolution settings from the settings app on your computer to reset the resolution. If you set the monitor to display a video greater than its resolution cap, you’ll get a no signal error. Wrong Monitor ResolutionĪll Dell monitors have a maximum display resolution of up to 8k. Repairing the ports will cost you a little more than replacing the cables, but you won’t have a choice. Since you can’t determine this on your own, it’s recommended to try the other fixes before inviting a repairer. If a new set of cables doesn’t work for you, the problem might be the port the cables connect to. If unplugging and reconnecting the cables doesn’t solve the problem, try a different pair of cables. If the cables themselves don’t work, the monitor will display a no signal error, even if they fit perfectly. However, you shouldn’t write off the cables yet, even if that simple activity doesn’t solve the issue. Merely unplugging the cables and reconnecting them will probably get your monitor working again. If your Dell monitor displays a no signal error, chances are very high that your cables are just loose.
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