StuckPixelFix Start check

Dead pixel test

A dead pixel test starts on white—not with a fixer.

Short answer

A likely dark/dead pixel stays dark on white or one primary color and does not light up on black. Software generally cannot repair a truly dead pixel.

Run the dead pixel check Open quick colors

What to look for

  • Clean the screen first; surface dust can look exactly like a tiny defect.
  • Use white to find dark points, then red, green, and blue to see whether one color component of the pixel fails.
  • Confirm the mark with the display’s built-in test before filing a warranty claim.
  • Photograph the physical display with another camera; a screenshot cannot capture a defect in the screen itself.

Use this order

  1. Open the full-screen white test and inspect edge-to-edge.
  2. Repeat red, green, and blue manually.
  3. Open black to see whether the point actually glows.
  4. Record location and count before checking the exact retailer or manufacturer policy.

Common questions

Can software fix a dead pixel?

Not if the pixel or subpixel is truly electrically inactive. Confirm it, document it, and check return, warranty, or service options.

Should I return a new monitor for one dead pixel?

That is a personal choice and a policy question. If the retailer return window is open, inspect the whole screen and protect that option before experimenting.