Difference between revisions of "Troubleshooting Macintosh Startup Issues"
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#Release the keys. | #Release the keys. | ||
| − | After resetting your computer’s PRAM, you may need to update your speaker volume, display resolution, and startup disk preferences. For more information about PRAM, see the Apple Support article about [http://support.apple.com/en-us/HT204063 | + | After resetting your computer’s PRAM, you may need to update your speaker volume, display resolution, and startup disk preferences. For more information about PRAM, see the Apple Support article about [http://support.apple.com/en-us/HT204063 NVRAM and PRAM]. |
===Reset the '''SMC'''=== | ===Reset the '''SMC'''=== | ||
Revision as of 10:06, 18 February 2015
If a Macintosh computer is having issues starting up, please try the following troubleshooting steps.
Contents
Wait
Occasionally after an update, the Macintosh will take longer than normal to start up. Wait at least 5 minutes for the start up process to complete.
Reset the PRAM
- Turn off the computer.
- Locate the following keys on the keyboard: Option, Command (⌘), P, and R. You will need to hold these keys down simultaneously in the following steps.
- Press and hold the Option-Command-P-R keys.
- Turn on your Mac.
- Continue holding the keys down until your Mac restarts, and you hear the startup sound for the second time.
- Release the keys.
After resetting your computer’s PRAM, you may need to update your speaker volume, display resolution, and startup disk preferences. For more information about PRAM, see the Apple Support article about .