Download apple hardware test mac pro


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The AHT can usually be found on one of your Mac's install dvds

We will teach you how below. Not all Mac models can run the Internet-based Apple hardware test. Other Macs manufactured after can use the latest version of the Apple hardware test, which is called the Apple Diagnostics test. As for the only Mac models that can use the web-based version of the Apple hardware test are as follows:. It is important to note that the mid through early Mac models may require to update the EFI firmware before you can run the web-based Apple Hardware Test.

If you are uncertain if you need to update the EFI firmware or not, you can do the following:. As soon as you have verified and confirmed that your Mac is capable of running the Internet-based Apple Hardware Test, you can start using it.

Disk Utility

These error codes generated by the Apple Hardware Test seem to be cryptic, and in some cases, only certified Apple service technicians can understand them. If no error was found after the test and your Mac is still experiencing problems, then you can check your system. To fix the problem, download third-party tools like Tweakbit MacRepair. Hold the D key while restarting. Connect to a Wi-Fi network, if prompted.

Select a language. Click on the arrow. Click Test. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. Categories: Mac. Learn why people trust wikiHow.

Apple Diagnostics Test: Ins and Outs | MacFly Pro Blog

The wikiHow Tech Team also followed the article's instructions and validated that they work. Learn more Method 1. Unplug external connections.

How to run Apple Hardware Test on a Mac from Early 2013 and older

If you have anything non-essential plugged into your Mac such as USB flash drives , unplug them before you begin the test. You can only access Apple Diagnostics as your computer is starting up. Press and hold D before the screen displays anything.

How to use Apple Hardware Test

If your Mac still plays the startup chime, press and hold D before the chime plays. You may need to disable your firmware password to start Apple Diagnostics. The machine will try to start the diagnostics test online. Select your network connection, enter the password if needed , and press the checkmark. Click on your language. Once you've selected your language, the diagnostics scan will start. Allow the diagnostics scan to take place.

This may take several minutes, and your computer may run loudly and seemingly erratically. This is normal - it's testing the hardware to make sure it works. Take note of the results.


  1. Apple Hardware Test (Overview) and other Test software - Macintosh Garden.
  2. best wedding album software for mac.
  3. Use the Apple Hardware Test (AHT) to Find Problems.
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  5. How to start up your Mac in Apple Diagnostics or Apple Hardware Test mode.

If Apple Diagnostics finds any abnormalities on your Mac, it will list a summary of the problem s and include a reference code under each listed result. From here, you can write down the reference code s for use when getting it repaired.

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Some errors have multiple reference codes, so write down the reference code rather than just the problem summary. Method 2. Insert the OS installation disc, if necessary. This is not necessary if you're running OS X Lion or later.


  1. How to use Apple Hardware Test;
  2. How to use, troubleshoot, and repair your Mac.
  3. How to Test Your Mac.
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