Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 24

2010-06-15 Common Reset Procedures When a reset procedure is required for troubleshooting, follow the applicable steps: Resetting the System Management Controller (SMC) To reset power management via the SMC chip: 1. If the computer is on, turn it off by choosing Shutdown from the Apple () menu. 2. Connect the power adapter to the computer and to a working power source. 3. Important: Use the keys on the left side of the keyboard. On the built-in keyboard, press Shift-Control-Option along with the power button once. Note: When the LED on the MagSafe connector is orange, resetting the SMC will change it to green for a few seconds, indicating that SMC was correctly reset. 4. Wait 5 seconds and press the power button to restart the computer. Note: If bottom case is removed, you may alternately reset the SMC by disconnecting the power adapter and the main battery, and holding the power button down for five seconds. For more information: http://www.apple.com/support HT1411-Apple Portables: Resetting the System Management Controller (SMC) Resetting the Parameter RAM (PRAM) To reset PRAM, 1. If the computer is on, turn it off. 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. Note: If the keyboard does not have an Option key, use the Alt key instead. 3. Turn on the computer. 4. Press and hold the Command-Option-P-R keys. Important: 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. For more information: http://www.apple.com/support HT1379-Apple Portables: Resetting the PRAM MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting - Common Reset Procedures 24