Checking the health, resolution, and performance of your computer or mobile display involves utilizing built-in operating system tools and diagnostic procedures. On a Windows PC, you can right-click the desktop, select "Display settings" to verify resolution, scaling, and multiple monitor configurations, and use the DirectX Diagnostic Tool by typing "dxdiag" in the Run menu to check graphics card specifications and display drivers. On macOS, navigate to System Settings > Displays to review refresh rates, color profiles, and scaling options. For physical hardware checks, you can inspect the screen for dead pixels, backlight bleeding, or color distortion by displaying solid white, black, red, green, and blue test images fullscreen in a web browser.
1 votes
Marked as accepted