Action keysAn action key performs the function indicated by the icon on the key. To determine which keys are on yourproduct, see Special keys on page 12.▲ To use an action key, press and hold the key.Icon DescriptionOpens Help and Support, which provides tutorials, information about the Windows operating system andyour computer, answers to questions, and updates to your computer.Help and Support also provides automated troubleshooting tools and access to support.Decreases the screen brightness incrementally as long as you hold down the key.Increases the screen brightness incrementally as long as you hold down the key.Switches the screen image among display devices connected to the system. For example, if a monitor isconnected to the computer, repeatedly pressing the key alternates the screen image from computer displayto monitor display to simultaneous display on both the computer and monitor.Turns the keyboard backlight off or on.NOTE: To conserve battery power, turn off this feature.Mutes or restores speaker sound.Decreases speaker volume incrementally while you hold down the key.Increases speaker volume incrementally while you hold down the key.Plays the previous track of an audio CD or the previous section of a DVD or a Blu-ray Disc (BD).Starts, pauses, or resumes playback of an audio CD, a DVD, or a BD.Plays the next track of an audio CD or the next section of a DVD or a BD.Turns the airplane mode and wireless feature on or off.NOTE: The airplane mode key is also referred to as the wireless button.NOTE: A wireless network must be set up before a wireless connection is possible.NOTE: The action key feature is enabled at the factory. You can disable this feature by pressing and holdingthe fn key and the left shift key. The fn lock light will turn on. After you have disabled the action key feature,you can still perform each function by pressing the fn key in combination with the appropriate action key.Keyboard area 13