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AHT

Hardware diagnostics

How to check your Mac’s hardware, interpret the results, deal with problems, and tackle tricky intermittent faults.

September 23, 2019 Macs, Technology

Tackling sleep and wake problems

From hardware diagnostics to pmset and resetting the SMC, all you need to know about diagnosing wake and sleep problems.

May 9, 2019 Macs, Technology

Diagnosing diagnostics and Apple Hardware Test

What should you do when you try to restart in Diagnostics Mode and can’t? And how to check and restore a Recovery partition.

March 12, 2019 Macs, Technology

Pick your Panacea: how to select a generic fix

When should you reset your SMC and NVRAM, repair permissions, install a Combo update, or re-install the whole of macOS?

March 9, 2018 Macs, Technology

Losing your Ethernet port unverifies your Mac

Even if you don’t connect it, a Mac’s Ethernet port is vital to authorise it to the App Store and more. Here’s how to cope if it goes missing.

October 6, 2017 Macs, Technology

Reliability of macOS Sierra: diagnostics

As macOS gets more complex, diagnostic and control tools provided by Apple have become less accessible. This makes macOS harder to diagnose and support.

August 28, 2017 Macs, Technology

Check your Mac with hardware diagnostics or AHT

How to run Apple’s diagnostic software to work out whether your Mac has a hardware fault – and how to interpret its error codes.

March 22, 2017 Macs, Technology

Reviving the hopeless Mac: what to try before visiting the Genius Bar

What to do when your Mac won’t start up, and is acting dead, or at least mortally wounded.

December 14, 2015 Macs, Technology

The Eclectic Light flickers: my iMac might be dead

You know, from soon after getting up, that some days are not going to be easy. Yesterday was […]

December 13, 2015 General, Language, Life, Macs, Painting, Technology
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