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.
To enable screen reader support, press Ctrl+Alt+Z To learn about keyboard shortcuts, press Ctrl+slash. Quotes are not sourced from all markets and may be delayed up to 20 minutes. Open System Preferences (you can click on the Apple logo in the menu to find it). Click on Software Update. Your computer will check for updates, and show that an update is available for your Mac.
Prepare your Mac
Start Apple DiagnosticsAb Errantry Mac Os Catalina
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
Apple silicon
Ab Errantry Mac Os DownloadIntel processor
View the test results
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.
Night road v1 mac os. 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: In good company mac os.
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