How to Fix Screen Resolution Problem in Windows 11 Using Registry Editor

Introduction

• This guide is for fixing screen resolution issues in Windows 11.
• Symptoms include stretched, blurry, or incorrect resolutions.
• Advanced method that involves modifying the Windows registry.

Warning

• Modifying the Windows registry can be risky.
• Proceed carefully and follow each step precisely.

Steps to Fix Resolution

1. Open Registry Editor

   • Go to search, type regedit, and press Enter.
   • This opens the Registry Editor window.

2. Navigate to Display Settings

   • Go to the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration

3. Modify Resolution Settings

   • Inside the Configuration folder, there are entries with random names representing different display configurations.
   • Find the folder matching your current display settings.
   • Expand the folder and locate the subfolder named 00.
   • Look for two registry values:
     • PrimSurfSize.cx: Represents screen width.
     • PrimSurfSize.cy: Represents screen height.
   • Double-click each value and select Base as Decimal.
   • Change them to your desired resolution:
     • Example: For resolution 1920x1080, enter 1920 for PrimSurfSize.cx and 1080 for PrimSurfSize.cy.

4. Apply Changes

   • Close the Registry Editor.
   • Restart your computer.

Conclusion

• Upon reboot, the screen resolution should be set correctly.
• The method corrects resolution issues by manually adjusting registry settings.

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