Diagnostics

How to Run Apple Diagnostics on a Mac

Test your Mac hardware with Apple Diagnostics: the startup keys for Apple Silicon and Intel, what each reference code means, and what to do if it passes.

2026-05-16

macOS Network Diagnostic Tools: What's Built In, What's Missing

A complete guide to mac network diagnostic tools: Wireless Diagnostics, Terminal commands, what Apple removed in Monterey, and free GUI alternatives.

2026-05-16