Laptop Display Diagnostic
Laptop Screen Test
Complete online display diagnostic for Windows laptops, Chromebooks, and MacBooks.
Diagnostic Sequence Preview
This test automatically cycles through calibrated solid color surfaces.
Pure BlackStep 1
Pure WhiteStep 2
Pure RedStep 3
Pure GreenStep 4
Pure BlueStep 5
Pure YellowStep 6
Pure CyanStep 7
Pure MagentaStep 8
Neutral Gray (50%)Step 9
Light Gray (82%)Step 10
Dark Gray (20%)Step 11
Monochrome GradientStep 12
Red to Green GradientStep 13
Blue to Green GradientStep 14
Red to Blue GradientStep 15
What to Look For
Laptop screens are prone to transport pressure marks, dead pixels, and hinge-induced backlight bleed. PixelCheck365 Laptop Screen Test lets you test any laptop display directly in your browser.
- Keyboard pressure marks and white bruising spots visible on solid light backgrounds.
- Dead subpixels on 1080p, 1440p, 4K, and OLED laptop displays.
- Hinge and bezel backlight bleed on black screens.
- Uniformity drops between top and bottom halves of the screen.
Display Preparation Tips
- 1Plug laptop into AC power for maximum display brightness.
- 2Disable battery saver display dimming and Night Light.
- 3Press F11 for true borderless fullscreen testing.
Frequently Asked Questions
How do I check if my laptop screen has dead pixels?
Run PixelCheck365 Laptop Screen Test in fullscreen mode. Cycle through solid white, red, green, and blue slides while scanning your screen closely.
Ready to Check Your Screen?
Launch full-screen diagnostics right now to verify pixel health, backlight uniformity, and color fidelity across your entire display.
Start Free Screen Test