The Apple Macbook Pro laptop features a built-in Airport card that allows you to connect wirelessly to Wi-Fi networks in your area. You may intermittently experience a loss in connectivity. This could be caused by the network's restarting, or may be due to problems with your Airport card. Alternatively, your connectivity issues could be caused by conflicting device settings in your computer's parameter RAM, also known as PRAM, and may need to be reset. If you continue to experience problems with connectivity there may be a problem with your Airport card, and it will need to be replaced. But don't reach for your wallet until you've tried these troubleshooting steps.
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Click the "Airport" icon at the top of your screen, and select "Open Network Preferences" from the drop-down menu. Alternatively, click the "Apple" icon in the upper-left corner of your screen and select "System Preferences" from the drop-down menu. Click the "Network" icon.
Click the "Turn AirPort Off" button, and click "Turn AirPort On" to restart the program. Click the "Advanced" button and click your wireless network in the list. Click the "-" button to remove the network, and click "OK."
Click the "Airport" icon at the top of the screen and select your network in the list. Enter your password and click "Join."
Click the "Apple" icon at the top of the screen and select "Shut Down" from the drop-down menu. Click "Shut Down" on the dialogue box.
Press the "Power" button on your computer, and hold down "Command," "Option," "P" and "R" at the same time before the grey screen appears.
Continue holding the keys until your computer restarts and the start-up sound plays. Release the keys.
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