Move beyond the browser at the right time
- DeviceOK browser tests do not explain a repeatable Mac hardware problem
- The Mac has startup/internal component symptoms
- You need an Apple-generated diagnostic result before service
What the official native tool can add
- Run outside normal browser access
- Test internal hardware categories unavailable to websites
- Return Apple diagnostic information/reference results
What to establish in DeviceOK first
- Keyboard, camera, microphone, speakers and display visual checks
- External-device/browser permission checks
- Confirm whether the symptom is app-specific before restarting into diagnostics
Keep the evidence chain
Record which DeviceOK test passed or failed, run the official diagnostic, then compare the native result with the original symptom. A native diagnostic pass does not automatically mean an app-specific problem is imaginary; it means the next investigation should move toward configuration, permissions, compatibility or intermittent behavior.