Does the monitor’s own menu flicker?
Open the on-screen display menu without running a browser test. If the menu stays steady but the desktop image flickers, investigate the video source, graphics settings, and cable. If the menu also flickers, the monitor itself may need support. This comparison helps narrow the next check but does not prove the cause.
What can I check safely?
Samsung’s monitor support steps include checking external cables and power, graphics drivers, and the refresh rate selected on the connected device. Menu names vary, so use the steps that apply to your own model.
- Check accessible power and video cables for a loose connection or visible damage. Replace a damaged cable with a compatible cable.
- Select a resolution and refresh rate supported by both the display and the connected computer. A mode the monitor does not support can cause flicker, distortion, or a black screen.
- If possible, connect the monitor to another device or try a known-good cable. Change one thing at a time and see what affects the symptom.
- If the menu flickers across sources or the problem persists, contact the monitor maker.
What if a monitor flickers while gaming or connected to a laptop?
Note when it happens: during a game, after connecting a laptop, on waking from sleep, or only with one input. Check whether the monitor’s own menu is affected, then verify that the selected resolution and refresh mode are supported by both the monitor and computer. A compatible cable or another video source can help narrow the next check; the timing alone does not identify a faulty part.
Can a browser flicker test diagnose it?
No. A browser can time its own animation callbacks, but it cannot watch the light emitted by the display, detect PWM brightness changes with a camera, check a power supply, or read the monitor’s exact refresh mode. ScreenCheckup’s refresh-rate test reports frame cadence observed in this browser only.
Flicker and ghosting are different symptoms. A moving-edge pattern can help you look for motion trails, but it is not a flicker measurement.
When should I stop troubleshooting?
If flickering continues in the monitor’s menu across sources, the display is unusually hot or smells burnt, or its power cycles, stop testing and contact the manufacturer. Follow model-specific safety and warranty guidance. Do not open the monitor or touch internal power components; this guide does not authorize a repair or claim.
Sources & further reading
Manufacturer references checked on . Model-specific guidance does not apply to every display.
- Samsung: Image is distorted, ghosted, or flickering on my monitor
- BenQ: How to fix monitor flickering
Read our visual inspection method for exact pattern values and software verification limits. Report a correction if a claim or source needs attention.