MacBook Air - 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 MacBook Air components, such as the
memory or processor.

To use Apple Hardware Test:


Disconnect all external devices from your MacBook Air except the power adapter.


Restart your MacBook Air while holding down the D key.


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


Press the Return key or click the right arrow button.

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Chapter 3

Problem, Meet Solution


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


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.


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

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