12 - Mac mini Troubleshooting
Reset PRAM and NVRAM
Reset PRAM and NVRAM
Procedure
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need
to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination
before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the
second time.
6. Release the keys.
7. Your computer's PRAM and the NVRAM are reset to the default values. The clock
settings may be reset to a default date on some models.
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