Dead pixels, backlight bleed, or weird colors on your screen?
If your display suddenly looks uneven, blurry, or has a tiny dot you cannot unsee anymore, your eyes are not imagining it. Many monitor problems only appear on specific colors. Before returning the monitor or blaming your graphics card, you should verify the panel itself.
What is actually happening
A screen is made of millions of pixels. Each pixel must change color precisely. When a pixel stops responding, stays lit, or the backlight shines unevenly, the defect becomes visible on certain backgrounds.
These are hardware panel issues. They are not caused by drivers, Windows settings, or your browser. The display is simply showing a physical flaw.
Common screen problems
Dead Pixels
A pixel that never turns on. Appears as a small black dot on bright backgrounds.
Stuck Pixels
A pixel locked to one color, often red or green, visible on dark screens.
Backlight Bleed
Bright glowing areas near edges or corners when showing black content.
Color Banding
Gradients appear as steps instead of smooth transitions.
Test your monitor properly
Use this online monitor test in fullscreen and cycle through the patterns. Solid colors and motion tests reveal panel flaws that normal wallpapers hide.
Start the Monitor TestHow to read the results
A tiny black dot on colored backgrounds means a dead pixel.
A bright colored dot that never changes indicates a stuck pixel.
Bright corners on a black screen show backlight bleed or poor uniformity.
If gradients look stepped instead of smooth, the panel has color banding.