The Apple Hardware Test can check your Mac's RAM and let you know of any issues with it. With many Mac models, you can replace faulty RAM yourself, and save a few dollars in the process. Which Macs Can Use the Internet-Based Apple Hardware Test?
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Not all Macs can use the Internet-based AHT. Some must use a local version that's either installed on the Mac's startup drive or included on the OS X install DVD. 2013 and Later Macs Macs made after 2013 must use a newer version of the hardware test, called Apple Diagnostics. You'll find instructions for testing newer Macs using Apple Diagnostics. Macs That Can Use Internet Version of AHT Model Model ID Notes 11-inch MacBook Air MacBookAir 3,1 late 2010 through 2012 13-inch MacBook Air MacBookAir 3,2 late 2010 through 2012 13-inch MacBook Pro MacBookPro 8,1 early 2011 through 2012 MacBookPro 6,2 mid 2010 through 2012 17-inch MacBook Pro MacBookPro 6,1 mid 2010 through 2012 MacBook 7,1 mid 2010 Mac min i4,1 mid 2010 through 2012 iMac11,2 mid 2010 through 2012 iMac11,3 mid 2010 through 2012. • If you're running or later, click the System Report button; otherwise, continue with the next step. • In the window that opens, make sure Hardware is highlighted in the left-hand pane. • From the right-hand pane, make a note of the boot ROM Version number, as well as the SMC version number (if present).
• With the version numbers in hand, go to the and compare your version against the latest available. If your Mac has an older version, you can download the latest version using the links on the above webpage. Using the Apple Hardware Test Over the Internet Now that you know your Mac is capable of using the AHT over the internet, it's time to actually run the test. To do this, you need a wired or Wi-Fi connection to the internet. Download wordpress for mac. • Make sure your Mac is turned off.
• If you're testing a Mac portable, connect it to an AC power source. Do not run the hardware test. • Press the power button to start the power-on process. • Immediately hold down the Option and D keys. • Continue to hold the Option and D keys until you see a Starting Internet Recovery message on your Mac's display. Once you see the message, you can release the Option and D keys.
• After a short time, the display will ask you to choose a network. Use the drop-down menu to select from the available network connections. • If you chose a wireless network connection, enter the password and then press Enter or Return, or click the checkmark button on the display. • Once you have connected to your network, you'll see a message that says 'Starting Internet Recovery,' which might take a while.