Running Apple Hardware Test on Intel based Macs
How To Run The Apple Hardware Test
To run the Apple Hardware Test on your Intel-based Mac, follow the steps given below:
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Disconnect all the external devices like printers, Flash drives, scanners, hard drives and so on (except mouse and keyboard) from your computer.
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Insert the Mac OS X Setup Disc 1 (If you have OS X 10.5.4 or earlier) or Mac OS X Setup Disc 2 (If you have OS X 10.5.5 or later) into the optical disc drive.
Note: The Mac OS X Install Discs should be included with your Mac.
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Restart your computer and press and hold down the D key on your keyboard before the startup screen comes up.
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The Apple Hardware Test will start in a couple of minutes. Once it is started, it will inspect your computer’s hardware configurations. This process will take a little moment.
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When the hardware inspection completes, you will be able to select a language of your preference on the screen. After selecting the language, click on the right arrow or hit the Return key on your keyboard.
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The Apple Hardware Test screen appears where you can choose the type of test(s) to perform.
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If you wish to perform all of the basic tests, hit the T or Return key or click the Test button on the screen. To perform a thorough test, select “Perform extended testing” before you click on the Test button. After you click on the Test button, the test will start and in a little moment, the test results will display in bottom right-hand side window.
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To see specific information about your Mac, go to the Hardware Profile tab on the Apple Hardware Test console. When you are in the tab, select a subject on the left to see particular information.
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To exit the Apple Hardware Test, click on the Restart or Shutdown button.