Apple MacBook Pro (13-inch, Mid 2009) User Manual download pdf (Page 55)

Chapter 4 Problem, Meet Solution 55

Using Apple Hardware Test

If you suspect a problem with the MacBook Pro hardware, you can use the Apple

Hardware Test application to help determine if there is a problem with one of the

computer’s components, such as the memory or processor.

To use Apple Hardware Test:

1 Disconnect all external devices from your computer except the power adapter.

If you have an Ethernet cable connected, disconnect it.

2 Restart your MacBook Pro 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.

If this procedure doesn’t work, you can insert the Applications Install DVD and hold

down the D key to use Apple Hardware Test.

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Apple MacBook Pro (13-inch, Mid 2009) User Manual Page 55