How to test a new monitor

A new monitor deserves a quick, repeatable inspection before the return window closes. You do not need special equipment — a browser and about five minutes are enough to cover the checks that are hard to fix later: pixels, uniformity and motion. This new monitor checklist works the same for a first display or an upgrade.

Updated October 17, 20263 min read

Before you start

Reset brightness and contrast to a normal setting, and note the setting you used.
Turn off night light, blue-light filters and any unusual color profile.
Use the cable and input you plan to keep, so the test reflects your real setup.
Clean the panel gently with a soft, dry cloth while the display is off.

A five-minute new monitor checklist

Work through the five checks below in order and record anything you are unsure about.

1. Confirm the active display mode

Open the resolution checker and confirm the reported resolution matches what you bought, accounting for OS scaling. Then run the refresh rate test: if you expected 144 or 165 Hz and see roughly 60 Hz, check the OS and GPU settings before judging the panel.

2. Scan for dead and stuck pixels

Cycle full-screen black, white, red, green and blue fields with the dead pixel test. Scan the whole panel at your normal viewing distance and note any dot that stays visibly different — where it sits and on which colors it shows.

3. Check uniformity and backlight bleed

Gray fields reveal large uneven patches; a black field in a dim room reveals glow near the edges with the backlight bleed test. Angle changes what you see: IPS glow shifts as you move, while true bleed stays fixed to the same panel area.

4. Look for color banding

Show smooth gradients with the color banding test. The transition should look continuous; abrupt steps, especially in dark tones, are worth recording.

5. Test motion clarity

Watch a moving pattern with the ghosting test, starting from the display's default response-time setting. Trailing and smearing depend on the setting, so change one thing at a time.

Run all five checks as a guided inspection, with a downloadable report →

What if you find a dead pixel?

Do not press on the panel. Record its location and the colors where it is visible, then compare your report with the seller's pixel policy. Policies differ widely: some manufacturers and retailers accept a small number of faulty pixels, others promise a flawless panel. The return window is the cheapest moment to raise it, and a written record with the panel setting you used makes the conversation concrete.

Questions this guide answers

How many dead pixels are acceptable?

There is no single standard. Display classifications such as ISO 13406-2 tolerated a small number of faulty pixels depending on resolution, but most buyers today judge by the retailer or manufacturer policy instead. Some sellers promise a zero-dead-pixel panel, others accept a few. Record what you find and compare it with the policy that applies to your purchase.

Should I return a monitor with a single dead pixel?

That depends on the seller's pixel policy and on how much the pixel bothers you. If the return window is still open, an exchange is usually the lowest-cost moment to act. A recorded report makes the conversation easier, but the decision stays yours.

How long does it take to test a new monitor?

About five minutes for the essential checks: display mode, pixels, uniformity, gradients and motion. The guided new-monitor inspection walks you through all of them in one pass.