Use Apple Diagnostics to test your Mac — by Apple Support

intermediatepageLink only (©)

Describes how to run Apple Diagnostics to help pinpoint which hardware component may be causing a problem, and how to read the reference codes.

Quick steps

Get your Mac ready
Boot into diagnostics
Follow the prompts
Check the results

Paraphrased from the source. Menus can differ by version, so check the original for full details.

Read the full article on support.apple.com

Source: Use Apple Diagnostics to test your Mac by Apple Support. Licence: Link only (©).

Source reviewed: 2026-11-02
Link checked: 2026-11-02
Tested hands-on: Not by Oddbyte.Me

macdiagnosticshardware

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