How to Zap PRAM on a Macintosh 10.4

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    • 1). Click the "Apple" menu icon and click "Shut Down" to power off your computer.

    • 2). Click the power button, and hold down the "Command," "Option," "P," and "R" keys on the computer's keyboard at the same time.

    • 3). Release the keyboard keys when the start-up sound chimes for the second time.

    • 4). Click "OK" in the settings notification window once the computer starts up, and enter the current date and time. Exit the window to save the new settings.

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