HP LJ475UT manual Labels, Component

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Labels

The labels affixed to the computer provide information you may need when you troubleshoot system problems or travel internationally with the computer:

●Serial number label—Provides important information, including the following:

Component

(1)Product name

(2)Serial number (s/n)

(3)Part number/product number (p/n)

(4)Warranty period

(5)Model description

Have this information available when you contact technical support. The serial number label is affixed inside the battery bay.

●Regulatory label—Provides regulatory information about the computer. The regulatory label is affixed inside the battery bay.

●Wireless certification label or labels (select models only)—Provide information about optional wireless devices and the approval markings of some of the countries or regions in which the devices have been approved for use. If your computer model includes one or more wireless devices, one or more certification labels are included with your computer. You may need this information when traveling internationally. Wireless certification labels are affixed to the bottom of the computer.

●SIM (subscriber identity module) label (select models only)—Provides the ICCID (Integrated Circuit Card Identifier) of the SIM. This label is located inside the battery bay.

82 Appendix A Troubleshooting and support

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Contents HP Notebook User Guide Product notice Safety warning notice Iv Safety warning notice Table of contents VGA Drives Performing a system recovery Backing up your information Cleaning products Page Welcome Finding informationFinding information Resources For information aboutTouchPad Getting to know your computerTop Lights Control Center System Power Management ButtonsKeys Fn keyEsc key Front Right Left Left Display Bottom Networking Using an Internet service provider ISP Identifying wireless and network status icons Creating a wireless connectionUsing a Wlan Turning wireless devices on and offConnecting to an existing Wlan Setting up a new WlanProtecting your Wlan Roaming to another networkUsing Bluetooth wireless devices select models only Connecting to a wired networkUsing a modem select models only Connecting a modem cableConnecting a country- or region-specific modem cable adapter Connecting to a local area network LAN select models only Identifying the hotkeys Using the keyboardKeyboard and pointing devices Using the keyboard Using keypads Using the embedded numeric keypadUsing the integrated numeric keypad Turning the embedded numeric keypad on and offTurning the TouchPad off and on Using the TouchPadUsing an optional external numeric keypad Selecting Using TouchPad gesturesNavigating Pinching/Zooming Setting pointing device preferencesScrolling Using the media activity keys MultimediaUsing the audio features Adjusting the volume Using the Webcam select models only Checking your audio functionsUsing video devices VGAConnecting an Hdmi device select models only Configuring audio for Hdmi select models only Power management Shutting down the computerSetting power options Using power-saving statesInitiating and exiting Suspend Initiating and exiting HibernationUsing battery power Using the Power iconUsing power management Viewing the current power management settingsDisplaying the remaining battery charge Inserting or removing the battery Charging a battery Identifying low battery levels Maximizing battery lifeManaging low battery levels Resolving a low battery level Conserving battery powerStoring a battery Replacing the battery Using external AC powerDisposing of a used battery Testing an AC adapter Drives Handling drivesReplacing or upgrading the hard drive Removing the hard driveLift the hard drive 3 out of the hard drive bay Drives Installing a hard drive Page Using optical drives select models only Identifying the installed optical driveInserting an optical disc Removing an optical discWhen the disc tray opens normally Page Inserting a digital card Using Digital Media Slot cards select models onlyExternal cards and devices Removing a digital card Using ExpressCards select models only Configuring an ExpressCardInserting an ExpressCard Using a USB device Removing an ExpressCardConnecting a USB device Removing a USB deviceUsing optional external devices Using optional external drivesMemory modules Page Page Page Page Security Protecting the computerSetting passwords in Computer Setup Using passwordsSetting passwords in the operating system Managing a power-on password Managing an administrator passwordEntering an administrator password Using firewall software Entering a power-on passwordInstalling an optional security cable Backup and Recovery Performing a system recovery Backing up your informationPerforming a system recovery Backing up your information Computer Setup Starting Computer SetupUsing Computer Setup Navigating and selecting in Computer SetupUpdating the Bios Restoring factory settings in Computer SetupDetermining the Bios version Downloading a Bios updateTroubleshooting and support TroubleshootingComputer is unable to start up Computer screen is blankSoftware is functioning abnormally Computer is on but not respondingComputer is unusually warm An external device is not working Wireless network connection is not working Optical disc tray does not open for removal of a CD or DVDMovie is not visible on an external display Computer does not detect the optical driveDisc does not play Contacting customer support Labels ComponentCleaning your computer Cleaning productsSpecifications Input powerOperating environment Electrostatic discharge Index USBJacks