Mac mini - Checking for a Hardware Problem

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Checking for a Hardware Problem

If you suspect a hardware problem, use the Apple Hardware Test application to help
determine if there’s a problem with one of the Mac mini components.

To use Apple Hardware Test:

1

Disconnect all external devices from your Mac mini, except the keyboard, mouse, and
display. If you have an Ethernet cable connected, disconnect it.

2

Restart your Mac mini while holding down the D key.

3

When the Apple Hardware Test chooser screen appears, select the language you want
to use.

4

Press the Return key or click the right arrow button.

5

When the Apple Hardware Test main screen appears (after about 45 seconds), follow
the onscreen instructions.

6

If Apple Hardware Test detects a problem, it displays an error code. Make a note of the
error code before pursuing support options. If Apple Hardware Test doesn’t detect a
hardware failure, the problem may be software-related.

Important: 

If Apple Hardware Test doesn’t appear after restarting, hold down

Command (x)-Option-D and restart the computer to access Apple Hardware Test
from the Internet. Your computer must be connected to a network that has access
to the Internet.

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58

Chapter 4

Problem, Meet Solution