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How to fix Second monitor Problems on Windows and macOS

by Tech Desk
by Tech Desk

This tip is about the how to fix Second monitor Problems on Windows and macOS. So read this free guide, How to fix Second monitor Problems on Windows and macOS step by step. If you have query related to same article you may contact us.

How to fix Second monitor Problems on Windows and macOS – Guide

Multiple monitors have all sorts of advantages, even over a single giant, ultra-wide monitor, from increased productivity to table placement flexibility. But the experience is not always perfect. Sometimes you plug in a second monitor and it doesn’t work, or minimize playback when you accidentally access it. While connecting an external monitor is usually a simple process, Windows 10 may not recognize older monitors or secondary monitors due to driver or hardware related issues.

If this issue occurs with your device, there are several troubleshooting steps (including verifying the connection and installing the correct drivers) to quickly fix the issue. Check out the following list of the most common issues with multiple monitors on your desktop or laptop and how to fix them on Windows and macOS.

How to fix second monitor issues on Windows and macOS

  • Restart the computer. This is a classic troubleshooting step because it usually works. It shuts down other processes that may be interfering with your monitor’s performance and gives you a clean base from which to proceed.
  • Change the screen resolution. If the second monitor’s display is blurry, pixelated, distorted, or discolored — or if it’s duplicating the main display — check your computer’s display settings. If the frame rate or resolution is incorrect, adjust it.
  • Adjust the scale settings. If windows display at different sizes on different monitors in Windows 10, adjust the scaling settings. The recommended setting will match the apparent window size on monitors as closely as possible.
  • On macOS, navigate to System Preferences > Displays. Select Standard for display or press Scale and choose the correct resolution.
  • Correct discoloration and color accuracy. (On macOS, use screen calibration.) If your computer’s settings do not correct the problem, use a hardware calibration device or adjust your monitor’s color, gamma, and brightness settings in the monitor’s on-screen menu. Every monitor is different, but Color or Display Depth are typical terms.
  • Adjust the monitor’s refresh rate. Monitors are designed to work at specific refresh rates. If your computer doesn’t send a signal at one of these supported rates, there’s a chance your monitor won’t display the signal.
  • On macOS, navigate to System Preferences > Displays and adjust the Refresh Rate drop-down menu.
  • Change current cable. A bad cable is the most common culprit when the monitor shows artifacts or no image. Cables that are too long and poorly shielded are especially prone to interference.
  • Try the cable in alternate ports on the PC, the monitor, or both. Only change one at a time, so you can identify which ports caused the problem. If your PC does not have a second compatible port, connect the monitor to a different computer to see if it works and to help identify the problem.
  • Make sure the cable matches the correct version of the display standard. HDMI cables can support anything from HDMI 1.0, which provides minimal support, to HDMI 2.1, which can support the highest resolutions, color spaces, and audio channels.
  • USB-C and Thunderbolt displays are even more confusing because the cables are physically interchangeable but not compatible with each other. DVI, in turn, has several versions and it is possible to connect an incompatible DVI cable to a computer or monitor.
  • Update your computer’s video drivers. If you have a third-party discrete graphics card, update the drivers from the manufacturer. If you connect the monitor to the motherboard’s display connectors, visit the motherboard or computer manufacturer’s website to check for updated drivers for those features.
  • Check your monitor’s input settings. If the monitor has multiple input interfaces, be sure to select the correct one from the monitor’s on-screen menu. Most monitors have auto detection feature which automatically switches to the connector receiving the signal. When that doesn’t work, set the video connector manually.
  • Make sure the monitor can display the content sent to it. Does the monitor have sufficient color gamut, resolution, or bit depth to display content correctly? Consult the monitor’s documentation or the monitor manufacturer’s website.

    • Final note

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