A list of languages that can be used to run the AHT will appear. The Apple Hardware Test will check to see what hardware is installed in your Mac.
You may need to wait for a bit for the hardware probe to complete. Once it's complete, the Test button will be highlighted.
Before you press the Test button, you can check what hardware the test found by clicking on the Hardware Profile tab. Look through the list of components to ensure that your Mac's major components are showing up correctly.
If anything appears to be wrong, you should verify what your Mac's configuration should be. You can do this by checking Apple's support site for the specifications on the Mac you are using. If the configuration information doesn't match up, you may have a failed device that will need to be checked and repaired or replaced. If the configuration information appears to be correct, you can proceed to the testing.
Click the Hardware Test tab. The AHT supports two types of tests: a standard test and an extended test. The extended test is a good way to find issues with RAM or graphics. But even if you do suspect such a problem, it's probably a good idea to start with the shorter, standard test. Click the Test button. The AHT will start, displaying a status bar and any error messages that may result. The test can take a while, so sit back or take a break.
You may hear your Mac's fans rev up and down; this is normal during the testing process. The status bar will disappear when the test is finished. The Test Results area of the window will display either a "No trouble found" message or a list of problems found. If you see an error in the test results, take a look at the error code section below for a list of common error codes and what they mean.
If everything seems OK, you may still want to run the extended test, which is better at finding memory and graphics problems.
To run the extended test, place a check mark in the Perform Extended Testing takes considerably more time box, and click the Test button. You can stop any test in process by clicking the Stop Testing button.
For those with older Macs, when you are running an OS X Hardware Test, an alert message will appear once complete with a list of the problems encountered. Again, you have the option of following on-screen instructions to restore the Mac, or re-booting the device using a startup disk, or taking the Mac to a store or Authorized Service Provider.
In any scenario involving hardware, you need to be aware that you are at risk of losing any items on your Mac that haven't been backed-up to the cloud. We recommend storing as much as you can with a cloud provider, such as Dropbox, or Apple iCloud. What happens if you run a Mac diagnostics and it comes back with nothing?
Does this mean you need to buy a new Mac? Or give up using Mac altogether, switching to another device and operating system? An Apple Diagnostics or Hardware Test that reports a lack of problems indicates it could be a software issue. Another alternative worth exploring, especially if your Mac is overheating or slowing down, is that your storage is too full of junk, clutter, applications, and duplicate files and photos.
On average, Mac users have 62GB of data, files, apps, and images they do not need. Too many files slow down and overheat computers, making them difficult to use and causing them to crash more often. With over 4 million downloads and hundreds of positive reviews, we know that CleanMyMac X has carefully removed over 11 million unnecessary apps and over 2. With two click removals, you can quickly clean loads of data, making your Mac easier to use and freeing up space for new documents, downloads and images.
Once you've run a Hardware Test or Apple Diagnostics, use CleanMyMac X it's free to try to identify and fix any other issues that are causing your Mac to run slowly or overheat. We hope this article was helpful and you found the answers to all your questions here. Stay tuned!
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