Mac OS X: How to quit an unresponsive application using Force Quit

 When your application is no longer responding and there is nothing you can do, try a force quite.


Follow these steps to force an application on your MacBook Pro to close:

1. Choose Force Quit from the Apple menu (or press Command-Option-Esc)
2. Choose the unresponsive application in the Force Quit window
3. Click Force Quit