Important: You must press this key combination before the gray screen appears. Press and hold the Command-Option-P-R keys.Note: If the keyboard does not have an Option key, use the Alt key instead. You will need to these keys down simultaneously in Step 4. Locate the following keys on the keyboard: Command, Option, P, and R.Resetting the SMC means you will also need to reset the date and time (using the Date & Time pane of System Preferences). Press power button on back to start up computer.Reconnect keyboard and mouse to computer.Plug power cord back in, making sure power button is not being pressed.The SMC reset occurs automatically once the Mac mini has been unplugged from AC power source for several seconds.
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