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Mac os x diagnostic cd

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Apple hardware test

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Mac Tip - How to run the Apple Hardware Test - 2015

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3 Memory Testing Utility for Mac OS X

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How to Fix common Apple Mac OS X problems

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You can review our privacy policy for additional information. I Accept Privacy Policy. Each Apple Hardware Test is specific to the type and model of Mac with which it was distributed.

How to Use Apple Hardware Test to Diagnose Mac Problems

To run the Apple Hardware Test, you must start up from the disc or volume containing the test:. You may want to run the Extended Test several times in a row as intermittent problems may not show up in every execution of the test. Running the Apple Hardware Test in Loop Mode overnight is an excellent troubleshooting step for finding intermittent hardware problems. It is especially useful when troubleshooting intermittent kernel panics. Looping On should appear in the right window. Then click the Extended Test button. Apple Hardware Test might display an error message if you don't disconnect all other devices.

Make sure that your Mac is on a hard, flat, stable, well-ventilated work surface. Shut down your Mac.


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Turn on your Mac , then immediately press and hold the D key on your keyboard. Keep holding the D key until you see the Apple Hardware Test icon: Select your language and click the right arrow. If you aren't using a mouse, you can use the up and down arrows to select a language, then press the Return key.