How to Enable Quartz Extreme on a MacBook Pro

Open Finder on your Dock, then click 'Applications.' Select 'Utilities,' then 'System Profiler.'
Click 'Graphics/Displays.'
Double-click 'Quartz Extreme.'
Click 'Enabled,' then close the window.
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How to Test an Airport Card (4 Steps)

Close all your open programs. Go to the Apple menu and select the apple in the upper left-hand corner. Click on 'About This Mac,' which is the first link in the drop-down menu.
Wait for the dialog box to open. Select 'More Info.' This takes you to your System Profiler.
Scan the left-hand side of the System Profile menu for the 'Hardware' button, then click it. Select 'Airport Card' under 'Hardware.' If information about the card shows up in the right side of the System Profile menu, your computer recognizes the card.
Take the laptop to a place with free wireless Internet service that does not require a password, such as a hotel lobby or coffee shop. Open your web browser. Since the network requires no password, the airport card should immediately open your web page with no issues. If you get an error screen, the airport card isn't working.
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