![]() ![]() On Windows 11 and 10, there are a few steps to make a system diagnostics report. Choose either Run offline, or I agree at the next screen to begin the diagnostic tests.Select your language from the menu screen and click OK.After the reboot, if you’re not using an Ethernet adapter, click on the Wi-Fi icon in the top right corner of the screen and connect to a Wi-Fi network. Once loaded, you have the option to run the utility in offline mode. On Silicon Macs, Apple Diagnostics requires an Internet connection to initialize.This will take about ten seconds, and the Mac will reboot into the diag tool. Once the Startup Options screen loads, press and hold the command and D keys simultaneously until the diagnostic utility loads.Press and hold the power button until you see the Loading startup options… message.If you use an external wired keyboard or mouse, you can leave these devices connected. Unplug all peripheral devices except the power and Ethernet adapter (if present).To test your Apple Silicon MacBook Pro, do the following: Apple Diagnostics works the same way whether your MacBook has an M1 or M2 chipset (Apple Silicon). Before that, the tool was separate from the Mac. ![]() How to run diagnostics on Macīefore June 2013, Apple added the diagnostic tool (via Internet recovery) to all Macs. Most of the time, you can use Network Diagnostics after you have checked with your Internet Service Provider that your Internet connection is working properly (ISP). It can also help you figure out why your Ethernet, AirPort, or internal or external modem connections aren’t working. Hardware diagnostics are needed to make sure that all of the hardware parts are healthy and work well. Over time, the hardware parts of a computer go through changes that can affect how well it works. In the worst case, these hardware problems that aren’t fixed can cause the whole system to fail. Most hardware problems show up as the Blue Screen of Death (BSOD), system crashes, temperatures that aren’t normal, or slow response times. It can give you a report that covers a wide range of technical details and give you ideas for fixing problems with both the hardware and the memory. Hardware Diagnostics is a programme for figuring out what’s wrong with your hardware. Or you have a newer Mac with firmware that can talk to Apple directly (pretty much anything 2010 and newer) over the internet.In this article we will discuss about how to run diagnostics on Mac and Windows. So the gist is, once you've lost the installed version of AHT, you either need the AHT disk that came with your computer or buy one from Apple or go to an Apple store and they'll run it for you. It doesn't permanently download this to disk, the firmware downloads and runs it, and upon reboot it's gone again. Since install disks are gone, I don't actually know how current Mac owners are supposed to get this restored, however also since that time, Apple has moved to firmware that can load the proper version of AHT via option-D on boot with a wired or wireless internet connection. So it can still be used when FV2 encryption is enabled. With 10.7 and newer hardware, the AHT is stuffed into an AHTxx.dmg file and found on the Recovery HD volume, also in a hidden directory. And if you encrypt the drive with File Vault 2 it would be unavailable in any case. If you reformat the drive and reinstall, this is not reinstalled. What I've learned is that pretty much all intel Macs before 10.7 did have AHT preloaded on the drive, found in hidden folder /System/Library/CoreServices/.dianostics. Unfortunately Apple simply doesn't make it easy to figure out how to restore this. A pile of them are available for download but are obscured behind a non-obvious naming convention. ![]() Every Mac model has its own components different than any other, and the Apple Hardware Test is unique to each model. ![]()
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