![]() ![]() I'd like it if you chose to follow me on Twitter so I can let you know when fresh items are published here first on Computerworld. Got a story? Drop me a line via Twitter or in comments below and let me know. Google+? If you use social media and happen to be a Google+ user, why not join AppleHolic's Kool Aid Corner community and join the conversation as we pursue the spirit of the New Model Apple? May all your problems be software-based and easily rectified. While this sounds like a great deal of hassle, don’t be too down hearted – even if you do have to replace the OS and reinstall all your digital stuff, this is still much cheaper than a full hardware repair. When that doesn’t seem to help you may need to reinstall your system (I hope you have backup). This could be good news as it suggests OS X Recovery will be able to patch most common problems – just launch Disk Utility from within that petition and fix your disk. You may have expected to find a hardware problem but none has been found. If you have an identified hardware issue then the best thing you can do is use this system to make a call to Apple Support, as that’s a good way to find out more about the problem (even if you can’t afford to fix it immediately). VFD001-VFD005: This is the one that I’ve seen most often, it means “Display issues” have been identified. NDD001: USB hardware isues (NDL001 indicates Bluetooth hardware problems). I’ll be honest, there are plenty of these codes – you’ll find a complete list right here at Apple Support, but here are ten to get started with:ĬNW001-CNW006: Wi-Fi hardware problems (or CNW007-CNW008, which means now Wi-Fi hardware has been detected, which may also be a problem if you think you have such hardware). What are the other most useful Apple Diagnostics codes? That’s good news as it suggests the problem you may be experiencing is not hardware-based. The machine will try to start the diagnostics test online. The diagnostics code every Mac user should want to see is ADP000. If Apple Diagnostics doesnt start, reboot the computer and press Option + D. What is the most important Apple Diagnostics code? If you want to restart your Mac just press the R key (or S to Shut Down). You can send the error codes to Apple to access details about these problems and how to repair them. If you choose to do so your Mac will restart in OS X Recovery and Safari will launch Apple’s support pages. You can send any error codes you receive to Apple using the Get Started link that appears. ![]() How do I use Apple Diagnostics information? When the test is complete any issues will be described and error code(s) displayed. A Checking Your Mac progress bar will appear for the duration of the test, which takes up to five minutes. ![]() Keep holding those keys down until Apple Diagnostics appears, once you get online the test will begin. Or depress the Option-D keys to access the tools online. Shut down the Mac and restart as follows: Start up and immediately hold the D key. You should also make sure you have the name and password for your Wi-Fi network if that’s how you get online. When you use Apple Diagnostics to test your Mac, the test results include one or more reference codes.When launching Apple Diagnostics you should disconnect all peripherals with the exception of the keyboard, mouse, monitor and Ethernet (if used). When you're done, choose Restart or Shut Down from the Apple menu. Your Mac will restart to a webpage with more information. To get information about your service and support options, make sure that your Mac is connected to the internet, then click ”Get started” or press Command-G. To shut down, click Shut Down or press S. To restart your Mac, click Restart or press R. The best alternative to running Apple iPhone diagnostics is using a professional tool to test your iPhone. To repeat the test, click “Run the test again” or press Command-R. Bonus Tip: A Multi-Functional Tool for Testing Your iPhone Wondershare Dr.Fone Since putting your iPhone in a diagnostic to run diagnostics iPhone is complicated, people often look for a more accessible alternative. When testing is complete, Apple Diagnostics shows the results, including one or more reference codes: View the test resultsĪpple Diagnostics shows a progress bar while it's checking your Mac: You can use the Wi-Fi Menu in the upper-right corner of your screen to choose a Wi-Fi network. You may be asked to choose a language and make sure that you have an active network connection. If neither method works, review the guidelines for using key combinations at startup. If using the D key doesn't work, press and hold Option (⌥)-D at startup instead. Apple Diagnostics also suggests solutions and helps you contact. If you think your Mac might have a hardware issue, you can use Apple Diagnostics to help determine which hardware component might be at fault. Release when you see a progress bar or you're asked to choose a language. Use Apple Diagnostics to test your Mac: Apple Diagnostics, formerly known as Apple Hardware Test, can check your Mac for hardware issues. Turn on your Mac, then immediately press and hold the D key on your keyboard as your Mac starts up.
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