HP LJ475UT 33

Hotkey combination	Description

fn+f1	Initiates Suspend, which saves your information in system memory. The display and other system
	components turn off and power is conserved.
	To exit Suspend, briefly press the power button.
	CAUTION: To reduce the risk of information loss, save your work before initiating Suspend.
	NOTE: If a critical battery level occurs while the computer is in the Suspend state, the computer
	initiates Hibernation and the information stored in memory is saved to the hard drive.
	The function of the fn+f1 hotkey can be changed. For example, you can set the fn+f1 hotkey to
	initiate Hibernation instead of Suspend.

fn+f2	Decreases the screen brightness level.

fn+f3	Increases the screen brightness level.

fn+f4	Switches the screen image among display devices connected to the system. For example, if a
	monitor is connected to the computer, fn+f4 alternates the screen image from computer display to
	monitor display to simultaneous display on both the computer and the monitor.
	Most external monitors receive video information from the computer using the external VGA video
	standard. The fn+f4 hotkey can also alternate images among other devices that are receiving video
	information from the computer.

fn+f5	Initiates the QuickLock security feature. QuickLock protects your information by displaying the
	operating system Log On window. While the Log On window is displayed, the computer cannot be
	accessed until a user password or an administrator password is entered.
	NOTE: Before you can use QuickLock, you must set a user password or an administrator
	password.

fn+f6	Displays charge information for all installed batteries. The display indicates which batteries are
	charging and reports the amount of charge remaining in each battery.

fn+f7	Mutes or restores speaker sound.

fn+f8	Decreases speaker volume.

fn+f9	Increases speaker volume.

fn+f10	Plays the previous track of an audio CD or the previous section of a DVD or a BD.

fn+f11	Plays, pauses, or resumes an audio CD, a DVD, or a BD.

fn+f12	Plays the next track of an audio CD or the next section of a DVD or a BD.

Using the keyboard 23

Contents

Page Page Safety warning notice Page Table of contents Page Page Page Page Page 1 Welcome Finding information 2 Getting to know your computer Top TouchPad Lights Buttons Keys Page Front Right Left Page Display Bottom 3 Networking Using an Internet service provider (ISP) Identifying wireless and network status icons Creating a wireless connection Turning wireless devices on and off Using a WLAN Connecting to an existing WLAN Setting up a new WLAN Protecting your WLAN Roaming to another network Using Bluetooth wireless devices (select models only) Connecting to a wired network Using a modem (select models only) Connecting a country- or region-specificmodem cable adapter Connecting to a local area network (LAN) (select models only) 4 Keyboard and pointing devices Using the keyboard Identifying the hotkeys Page Using keypads Using the integrated numeric keypad Using the TouchPad Turning the TouchPad off and on Navigating Selecting Using TouchPad gestures Setting pointing device preferences 5 Multimedia Using the media activity keys Using the audio features Adjusting the volume Checking your audio functions Using the Webcam (select models only) Using video devices VGA Connecting an HDMI device (select models only) Configuring audio for HDMI (select models only) 6 Power management Shutting down the computer Setting power options Using power-savingstates Using the Power icon Using power management Using battery power Displaying the remaining battery charge Inserting or removing the battery Charging a battery Maximizing battery life Managing low battery levels Conserving battery power Storing a battery Disposing of a used battery Replacing the battery Using external AC power Testing an AC adapter 7 Drives Handling drives Replacing or upgrading the hard drive Removing the hard drive Page Installing a hard drive Page Using optical drives (select models only) Identifying the installed optical drive Inserting an optical disc Removing an optical disc Page Page 8 External cards and devices Using Digital Media Slot cards (select models only) Inserting a digital card Removing a digital card Using ExpressCards (select models only) Configuring an ExpressCard Inserting an ExpressCard Removing an ExpressCard Using a USB device Connecting a USB device Removing a USB device Using optional external devices Using optional external drives 9 Memory modules Page Page Page Page 10 Security Protecting the computer Using passwords Setting passwords in the operating system Setting passwords in Computer Setup Managing an administrator password Entering an administrator password Managing a power-onpassword Using firewall software Installing an optional security cable 11 Backup and Recovery Performing a system recovery Backing up your information 12 Computer Setup Starting Computer Setup Using Computer Setup Navigating and selecting in Computer Setup Restoring factory settings in Computer Setup Updating the BIOS Determining the BIOS version Downloading a BIOS update A Troubleshooting and support Troubleshooting The computer is unable to start up The computer screen is blank Software is functioning abnormally The computer is on but not responding The computer is unusually warm An external device is not working The wireless network connection is not working The optical disc tray does not open for removal of a CD or DVD The computer does not detect the optical drive A disc does not play A movie is not visible on an external display The process of burning a disc does not begin, or it stops before completion Contacting customer support Labels B Cleaning your computer Cleaning products C Specifications Input power Operating environment D Electrostatic discharge Index