- Apple Diagnostics shows a progress bar while it's checking your Mac: When testing is complete, Apple Diagnostics shows the results, including one or more reference codes. Learn about Apple Diagnostics reference codes. To repeat the test, click 'Run the test again' or press Command-R. To restart your Mac, click Restart or press R.
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Trade in with Apple
Winds of the past mac os. Turn an eligible device into credit towards a new one, or recycle it for free. Apple Trade In is good for you and the planet. Socc mac os.
Click on the download link that shows up, and enter the personal redemption code given to you. Open the downloaded Mac OS X El Capitan software and preview the file in the Applications folder. Click 'Continue' and then select 'Agree'. Click on 'Install' and then enter your admin password.
Get Support
Choose a product and we'll find you the best solution.
Service and support from Apple experts
AppleCare products provide additional hardware service options and expert technical support from Apple.
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Beware of counterfeit parts
Some counterfeit and third party power adapters and batteries may not be designed properly and could result in safety issues. To ensure you receive a genuine Apple battery during a battery replacement, we recommend visiting an Apple Store or Apple Authorized Service Provider. If you need a replacement adapter to charge your Apple device, we recommend getting an Apple power adapter.
Also non-genuine replacement displays may have compromised visual quality and may fail to work correctly. Apple-certified screen repairs are performed by trusted experts who use genuine Apple parts.
Apple Service Programs
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. Apple Diagnostics also suggests solutions and helps you contact Apple Support for assistance.
Prepare your Mac
- Shut down your Mac.
- Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power.
- Make sure that your Mac is on a hard, flat, stable surface with good ventilation.
Start Apple Diagnostics
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
Apple silicon
- Turn on your Mac and continue to press and hold the power button as your Mac starts up.
- Release when you see the startup options window, which includes a gear icon labeled Options.
- Press Command (⌘)-D on your keyboard.
Intel processor
- Turn on your Mac, then immediately press and hold the D key on your keyboard as your Mac starts up.
- Release when you see a progress bar or you're asked to choose a language.
View the test results
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Apple Diagnostics shows a progress bar while it's checking your Mac:
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When testing is complete, Apple Diagnostics shows the results, including one or more reference codes. Learn about Apple Diagnostics reference codes. Block kicker 3d mac os.
To repeat the test, click 'Run the test again' or press Command-R.
To restart your Mac, click Restart or press R.
To shut down, click Shut Down or press S.
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. Your Mac will restart to a webpage with more information. When you're done, choose Restart or Shut Down from the Apple menu.
Learn more
On an Intel-based Mac, if you can't start Apple Diagnostics with the D key, try these solutions:
- Press and hold Option-D at startup to use Apple Diagnostics over the internet.
- Make sure that your Mac isn't using a firmware password.
