Monitor Not Filling Screen? 10 Simple Fixes to Restore Full Screen Display

If your monitor is not filling the screen and you’re seeing black bars or the display looks stretched, you’re not alone. Many users face this issue, whether they’re using a laptop, desktop, or even a gaming monitor. This problem can be frustrating, but the good news is that it’s often easy to fix. In this guide, we’ll walk you through 5 simple fixes that can restore your monitor’s display to its full screen and ensure you get the best viewing experience.


1. Check Your Display Resolution and Aspect Ratio Settings

One of the most common reasons why your monitor is not filling the screen is because the display resolution or aspect ratio settings are not set correctly. If the resolution is too low or incompatible with your monitor, it can result in black bars around the screen or the image looking stretched.

How to fix this:

  • Adjust the resolution: Right-click on the desktop and select Display Settings. Scroll down to Display Resolution and make sure it’s set to the native resolution of your monitor. For most monitors, this would be 1920×1080 (Full HD), 2560×1440 (2K), or 3840×2160 (4K).
  • Set the correct aspect ratio: Make sure the aspect ratio is set to 16:9 for modern monitors. This will ensure that the image is displayed correctly without stretching or leaving black bars.

By ensuring your display resolution and aspect ratio are set correctly, you can fix the issue of the monitor not filling the screen.


2. Update Graphics Drivers for Optimal Display Settings

Outdated or corrupt graphics drivers can cause issues with the display, leading to your monitor not filling the screen properly. It’s important to keep your graphics card drivers updated to ensure optimal performance and compatibility with your monitor.

How to fix this:

  • Update your graphics drivers: Open Device Manager (on Windows) and go to Display Adapters. Right-click on your graphics card and select Update Driver. If the automatic update doesn’t work, visit the manufacturer’s website (such as NVIDIA, AMD, or Intel) to download and install the latest drivers.
  • Reinstall drivers: If updating doesn’t help, you can also try uninstalling the graphics drivers and reinstalling them from scratch.

By keeping your graphics drivers up-to-date, you can avoid issues that may cause your monitor display to not fill the screen correctly.


3. Adjust the Monitor’s Display Settings and Scaling Options

Another reason your monitor might not be filling the screen is due to incorrect scaling settings or display settings within the monitor’s own menu. Most modern monitors have built-in settings that allow you to adjust the display to your preference.

How to fix this:

  • Reset monitor settings: On the monitor itself, use the Menu button to open the on-screen display (OSD). Look for options such as Aspect Ratio, Scaling, or Display Mode. Set these to Auto or the recommended settings for your screen.
  • Adjust the screen size: Some monitors allow you to manually adjust the screen size using the OSD. Try resetting it to default settings or selecting an option like Full Screen or Wide Mode to fix the issue of the screen not filling up.

Correcting the display settings in the monitor menu ensures that the image is properly adjusted to the screen size.


4. Ensure the Monitor’s Input Source Matches the Connected Device

Sometimes, the issue of the monitor not filling the screen is caused by the input source not matching the device you’re using. Your monitor may be receiving the wrong signal type, such as VGA instead of HDMI, which can cause the display to look off-center or not fill the screen.

How to fix this:

  • Check the input source: Make sure the input source on the monitor matches the cable and device you’re using (e.g., HDMI, DisplayPort, or VGA).
  • Change the input mode: Use the monitor’s menu to switch between available input options until the display is properly filled. For example, switch from VGA to HDMI if you’re using an HDMI cable.

By ensuring the correct input source is selected, you can prevent issues with the monitor not filling the screen and make sure the image is properly displayed.


5. Adjust the Graphics Card’s Output Settings

Your graphics card settings can also play a crucial role in whether your monitor fills the screen correctly. If your GPU settings are set incorrectly, they can cause the display to be misaligned or not fully fill the screen.

How to fix this:

  • Open your GPU control panel: For NVIDIA, AMD, or Intel graphics, open the Control Panel for your respective graphics card.
  • Check display scaling options: In the NVIDIA Control Panel, go to Display > Adjust Desktop Size and Position and make sure the scaling mode is set to Aspect Ratio or Full-Screen. In AMD Radeon settings, check under Display > Scaling Mode and set it to Full-Screen or Maintain Aspect Ratio.
  • Check the output resolution: Make sure that the output resolution matches the native resolution of your monitor.

By adjusting the GPU output settings, you can ensure that your monitor display is optimized to fill the screen fully and correctly.

6. Ensure the Correct Display Mode is Set on the Operating System

Sometimes, your monitor not filling the screen can be attributed to settings within your operating system. On both Windows and macOS, display settings can influence how the content is displayed, leading to issues like borders, stretched images, or a cropped display.

How to fix this:

  • On Windows: Right-click on your desktop and select Display Settings. Ensure that the Display Mode is set to Extend if you’re using multiple monitors or Duplicate for mirroring displays. Adjust the scaling settings under Advanced Display Settings to 100% (or the recommended value) to prevent the display from being misaligned.
  • On macOS: Go to System Preferences > Displays, and adjust the Resolution to Default for Display to ensure the content fills the screen properly.

By selecting the right display mode and adjusting scaling within your operating system, you can resolve the issue of your monitor not filling the screen.


7. Check for Physical Damage to Cables and Ports

Faulty or damaged cables and ports can sometimes cause issues with your monitor not filling the screen. If the HDMI cable, DisplayPort cable, or VGA cable is broken or malfunctioning, the image might not display correctly, leading to issues like black borders or incorrect aspect ratios.

How to fix this:

  • Inspect the cables connected to the monitor and computer for visible signs of damage. If the cables are frayed or broken, try using a new cable.
  • Test the monitor and computer with different ports. For example, switch from HDMI 1 to HDMI 2 or from DisplayPort to HDMI if available, to see if a different port resolves the issue.

By ensuring the cables and ports are in good condition, you can eliminate any connection-related issues that might be preventing your monitor from filling the screen properly.


8. Perform a Power Cycle on the Monitor

A power cycle can help reset the monitor’s internal settings and resolve any minor software glitches that may be affecting how the screen fills. This can be especially helpful if you’ve made changes to the input source, resolution, or display settings.

How to fix this:

  • Turn off the monitor and unplug it from the power outlet.
  • Wait for about 30 seconds to 1 minute.
  • Plug the monitor back into the power outlet and turn it on again.

This simple power cycle will often reset the monitor’s internal settings and can help with issues like the monitor not filling the screen.


9. Reset Your Monitor to Factory Defaults

If none of the above solutions have worked, performing a factory reset on your monitor can be a final step to resolve the issue. This will restore the monitor’s settings to their original state and may help correct any misconfigurations that are preventing it from filling the screen.

How to fix this:

  • Use the Menu button on your monitor to open the OSD (On-Screen Display) menu.
  • Look for the option labeled Factory Reset or Reset All Settings and select it.
  • Confirm the reset, and the monitor will return to its default settings.

After resetting the monitor to factory defaults, check if the display now fills the screen correctly. This option is particularly helpful if you’ve made many adjustments to the settings and want to start fresh.


10. Use Software Tools for Display Calibration

If your monitor still isn’t filling the screen despite trying other fixes, using a display calibration tool can help adjust the color, brightness, and aspect ratio for optimal viewing. These tools allow you to fine-tune your monitor’s display to your liking and resolve issues related to stretched or improperly sized images.

How to fix this:

  • Use built-in software like Windows Color Calibration or third-party calibration tools such as CalMAN or DisplayCAL.
  • Follow the instructions in the software to adjust brightness, contrast, and color balance for the best fit on your monitor.

Using a calibration tool ensures that the monitor display is configured properly and can fix any minor issues related to screen sizing.

Frequently Asked Questions (FAQs) About “Monitor Not Filling Screen”


1. Why is my monitor not filling the screen after I connect it to my computer?

If your monitor is not filling the screen after connecting to your computer, the issue could be due to an incorrect display resolution or aspect ratio setting. Ensure your screen resolution matches the native resolution of your monitor. Additionally, verify that the scaling settings in the operating system are set correctly to 100% or the recommended value. You may also need to adjust your monitor’s display mode or reset it to default settings.


2. How can I fix my monitor not filling the screen with HDMI connection?

If your HDMI-connected monitor isn’t filling the screen, the issue could lie with the input source settings or display scaling. First, ensure that your HDMI cable is securely connected to both the monitor and the computer. Then, check your monitor settings to ensure the input mode is set to the correct HDMI port. Additionally, adjust the display resolution and set it to the monitor’s native resolution for a full-screen display.


3. What should I do if my monitor is not filling the screen after changing the display resolution?

If changing the display resolution has caused your monitor not to fill the screen, it’s likely that the new resolution isn’t compatible with your monitor’s aspect ratio. To fix this, you should revert to the native resolution of your monitor, which is typically 1920×1080 (Full HD), 2560×1440 (2K), or 3840×2160 (4K), depending on the monitor’s specifications. This will ensure that the screen displays properly and fills the entire screen without distortion.


4. Why does my monitor display a black border and not fill the screen when using a laptop?

When using a laptop with an external monitor, the issue of a black border around the screen often occurs because the laptop’s display settings are not set to extend or mirror properly. Check your display settings by going to Display Settings in Windows or System Preferences on macOS. Make sure the resolution is properly configured and that scaling is set to 100% to avoid black borders around the screen.


5. How can I adjust my graphics card settings if my monitor is not filling the screen?

If your monitor is not filling the screen due to graphics card issues, you can adjust the settings through your GPU control panel (e.g., NVIDIA Control Panel, AMD Radeon Settings, or Intel Graphics Command Center). Ensure that the scaling mode is set to Full-Screen or Aspect Ratio. Check that the output resolution from the graphics card matches the monitor’s native resolution, and adjust any overscan or underscan settings to ensure the display fits properly.

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