How to use Screen Test
- 1Press Start — the test goes full-screen.
- 2Click or press → to cycle colours.
- 3Look closely for dots that don't match.
What it does
- Solid colour cycle
- Gradients & banding
- Stuck-pixel fixer
- Keyboard controls
Screen Test
Test any screen for dead or stuck pixels, backlight bleed, uniformity and colour banding with full-screen test patterns.