PCHardwareTest guide
Dead Pixel Test Online
PCHardwareTest provides a browser-based dead pixel test approach through its Screen Test Online. The browser fills the display with controlled colors and patterns so you can visually inspect individual areas of a monitor or laptop screen.
What this dead pixel test online can check
- possible dead pixels
- possible stuck pixels
- color-field inspection
- fullscreen screen inspection
This is a visual check, not an electrical detector. Dust, scratches, image retention and other panel effects can resemble a pixel problem, so confirm any suspect spot across several colors.
How to dead pixel test online
- Clean the screen so dust or smudges do not look like pixels.
- Open the Screen Test Online section and use fullscreen mode.
- Check white, black and primary-color backgrounds or other patterns provided by the test.
- Look for a tiny spot that stays different while the surrounding color changes, then repeat on other backgrounds before drawing a conclusion.
What the browser can and cannot tell you
This is a visual check, not an electrical detector. Dust, scratches, image retention and other panel effects can resemble a pixel problem, so confirm any suspect spot across several colors. The goal is to make the browser-visible behavior easy to verify without pretending that a web page can inspect every internal hardware component.
Related PC hardware tests
Use the full PC Hardware Test Online suite to move between keyboard, mouse, screen, webcam, microphone, audio, gamepad, touch, battery and connection checks without installing separate software.
FAQ
How do I use the dead pixel test online on PCHardwareTest?
Open the linked test on the homepage, follow the on-screen instructions, and use the browser-visible result as a practical first check. This is a visual check, not an electrical detector. Dust, scratches, image retention and other panel effects can resemble a pixel problem, so confirm any suspect spot across several colors.
Do I need to download software?
No. This guide links back to the browser-based test on PCHardwareTest. Some tests can require permission for a camera or microphone, but there is no dedicated application download for the test itself.