How To Fix Blurry Second External Monitor Displays

Connecting a second external monitor to your laptop or desktop computer can increase productivity by providing more screen real estate. However, sometimes the second monitor appears blurry, making it difficult to use. Here are the top solutions for fixing a blurry second external monitor display.

Check the Monitor Connection

The first step is to check that the monitor is properly connected via the correct cable to your graphics card port ([11]).

  • For LCD monitors, use either a DVI or HDMI cable instead of VGA to ensure a digital signal. VGA cables can cause blurriness on digital displays ([11]).
  • Try using a cable where both ends have the same type of connector to eliminate converters that could degrade the signal ([6]).
  • Check that the cable is not damaged or loose. Unplugging both ends and reconnecting can help reset the connection ([6]).

Adjust Display Scaling Settings

If your external monitor looks pixelated or distorted, the display scaling may be incorrect ([1][6]).

  • Set both the laptop screen and external monitor to 100% scaling for the best results ([7][24]).
  • Match the text size, resolution, orientation, and other display settings across monitors ([11]).

Restart the Computer

Restarting the computer resets graphics drivers and processes that may be interfering with the external display signal ([3][6]). Allow Windows to detect the monitor again after rebooting.

Update Graphics Drivers

Outdated, corrupt, or faulty graphics drivers can manifest as monitor blurriness or distortion ([6]).

  • Update to the latest graphics drivers from the manufacturer’s website ([11]).
  • Reinstall the current graphics driver through Device Manager ([11]).

Adjust ClearType Text

ClearType adjusts font smoothing in Windows to improve text legibility on LCD monitors ([15]).

  • Open the ClearType Text Tuner in Windows Display Settings ([11]).
  • Disable ClearType on the external monitor if text appears blurry.

Use Windows Display Repair

Windows 10 has a built-in feature for detecting and fixing blurry desktop programs ([8]).

  • Enable “Fix apps that are blurry” in Windows Display settings ([24]).
  • Sign out and back in after enabling this feature.

Change Monitor Brightness, Contrast, and Color Settings

Refer to your monitor’s user manual to calibrate these display settings properly ([4]):

  • Brightness directly impacts color and tone reproduction ([9]).
  • Contrast affects color depth and visibility of details ([9]).
  • Color settings like RGB levels influence white point and color accuracy ([16]).

Carefully calibrating these values can help clarify a blurry second monitor’s picture.


Troubleshooting a blurry second monitor begins with checking for physical connection issues, matching display settings across screens, updating graphics drivers, and fine-tuning display calibration. Enabling Windows fixes for blurry apps can also automatically detect and resolve external monitor clarity problems in many cases. With persistence and attention to details, you can resolve blurriness issues and extend your productivity with a sharp second display.