Dead Pixel Test
Inspect your screen using solid colors.
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Look for pixels that stay a different color as you switch backgrounds. This is a visual inspection, not an automatic hardware diagnosis. Up to 1,000,000 characters. Review the settings before running.
Your result
How to use Screen test
- Choose a test color.
- Inspect the colored area, or choose Full screen for a larger view.
- Try the other colors. Press Escape to leave full-screen mode.
Useful next steps
What to expect
Inspect your screen using solid colors. Look for pixels that stay a different color as you switch backgrounds. This is a visual inspection, not an automatic hardware diagnosis.