Why Is Half of My Screen Blurry on Windows 11? Proven Solutions for a Smooth Experience

What Causes a Blurry Screen on Windows 11? Effective Fixes for a Clear Display

A blurry half-screen on Windows 11 often points to software or hardware issues. Addressing this promptly helps restore display clarity and prevents further complications.

Common Causes

• Corrupted or outdated display (GPU) drivers
• Incorrect screen refresh rate settings
• Outdated monitor firmware
• Loose, damaged, or faulty display cables
• Minor system glitches
• Hardware failure in the monitor or graphics card

Step-by-Step Solutions

Initial Checks

• Restart the GPU driver using Win + Ctrl + Shift + B.
• Inspect and secure all cable connections, especially with external monitors.

Solution 1: Roll Back or Reinstall GPU Drivers

1. Open Device Manager.
2. Expand "Display adapters," right-click your GPU, and select "Properties."
3. In the "Driver" tab, choose "Roll Back Driver" if available.
4. If rollback is unavailable or ineffective, use Display Driver Uninstaller (DDU) to remove the driver, then download and install the latest version from your hardware manufacturer.

Solution 2: Adjust Screen Refresh Rate

1. Go to Settings > System > Display > Advanced Display.
2. Select a different refresh rate that matches your monitor’s specifications.

Solution 3: Update Monitor Firmware

1. Check your monitor’s user manual for firmware update instructions.
2. Download the latest firmware from the manufacturer’s website if available.

Solution 4: Update BIOS and Chipset Drivers

1. Verify your current BIOS version via System Information.
2. Download and install the latest BIOS and chipset drivers from your PC manufacturer’s support page.
3. Ensure uninterrupted power during BIOS updates to prevent system damage.

Solution 5: Address Potential Hardware Faults

If the issue persists after all software fixes, the monitor or GPU may be failing. Consult a professional technician for a thorough hardware inspection and repair.

Additional Display Issues

• Blurry Background on Login Screen: This is a default Windows 11 effect. Disable it via Registry Editor or Group Policy Editor (not available in Home edition). If blurriness extends beyond the login screen, review display settings and update graphics drivers.
• Blurry Second Monitor: Causes include outdated firmware, incorrect scaling or refresh rate, faulty cables, or corrupted drivers. Check each factor systematically for resolution.

Summary

• Begin with simple troubleshooting steps before advancing to driver updates or hardware checks.
• Keeping all drivers and firmware current is essential for optimal display performance.
• Persistent issues may indicate hardware failure, requiring professional repair.

These methods help restore a crisp, clear display, improving productivity and user satisfaction.