Guides
Each guide puts the tests in order for one job and explains which setting or cause to check first.
Choose a guide
A display just arrived, or you are buying used
How to test a new or used monitor
Set up first, check fixed faults such as dead pixels, then the whole panel, then motion. Includes how to tell a monitor fault from a computer, cable, or setting problem.
Games tear, stutter, trail, or look wrong
Gaming monitor settings
Refresh rate, variable refresh, overdrive, frame caps, and the Windows HDR controls, organized by the symptom you see.