Troubleshooting

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

Troubleshooting Slow Internet on Mac

Use network diagnostic tools to find out why your Mac's internet is slow. A systematic approach using ping, traceroute, and speed tests.

2026-01-14