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How to Fix a Stretched, Distorted, or Black-Bordered Monitor Display

PRISM+ Support teamUpdated 30 September 2026~3 min remaining3 steps

If your monitor screen looks stretched, squished, distorted, or has black bars on the sides or top and bottom, the issue is usually caused by a mismatch between the monitor's resolution, aspect ratio, or display scaling settings.

Common Causes

CauseWhat Happens
Resolution mismatchIf your device is not set to the monitor's native resolution, images may appear stretched or squished.
Aspect ratio mismatchContent with a different aspect ratio from your monitor may display with black bars on the sides or top and bottom. For example, 16:9 content on a 21:9 monitor.
Scaling settingsYour operating system or graphics card may stretch or shrink the image to fit the screen, which can affect how the content appears.

Steps

  1. 1
    1 min

    Open your device's Display Settings and select the native resolution of your monitor.

    For example:

    • Full HD monitor → 1920 × 1080
    • 4K monitor → 3840 × 2160

    Using the monitor's native resolution generally provides the clearest and most accurate image.

  2. 2
    1 min

    Check your monitor's on-screen display (OSD) menu for display mode or aspect ratio settings.

    Depending on the monitor model, options may include:

    • Full
    • Aspect
    • 1:1

    Select the setting that matches how you want the content to be displayed.

  3. 3
    1 min

    If the issue persists, check the display scaling settings on your device or graphics card.

    • Windows: Check your display and graphics settings.
    • Mac: Check your display settings.
    • Gaming consoles: Check the output resolution and screen-fit settings.

Why Are There Black Bars?

Black bars are not necessarily a fault with the monitor. They can appear when the content's aspect ratio does not match the monitor's screen dimensions.

For example, when 16:9 content is displayed on a 21:9 monitor, black bars may appear on the sides. These bars help preserve the original aspect ratio and prevent the image from being stretched or distorted.

Tip: For the best image quality, use your monitor's native resolution and a matching aspect ratio whenever possible.

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