Enww | HP 397381-001 manual

The computer cannot connect to a wireless local area network (WLAN).

If the computer cannot connect to a WLAN:

●Verify that the computer is within optimal range of a wireless router (access point).

●Verify that the wireless light on the computer is turned on.

●Verify that the computer wireless antennae are free from obstructions.

●Verify that the wireless router and broadband modem are working correctly.

170 Chapter 15 Troubleshooting

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HP 397381-001 manual Enww

Contents

Page Page Table of contents Power Drives Multimedia External Media Cards External DevicesMemory Modules Wireless Select Models Only Modem and Local Area NetworkSecurity Setup Utility Software Updates and RecoveryTroubleshooting Routine Care Electrostatic discharge 175 Enww Components Select Hardware tab Device Manager Top components Keys TouchPad Buttons and switches Standby, resumes from standby into Windows Lights Front components Rear components Right-side components Left-side components Bottom components Display components Wireless antennae select models only Additional hardware components Labels Specifications Rated input powerOperating environment Expansion port input/output signals Feature Support TouchPad and Keyboard TouchPad Using the TouchPad Using an external mouseSetting TouchPad preferences Keyboard Hotkeys Hotkey procedures Hotkey quick referenceDisplay and clear system information fn+esc Open the Help and Support Center fn+f1 Open the Print Options window fn+f2Open a Web browser fn+f3 Switch the screen image fn+f4 Initiate standby fn+f5 Initiate QuickLock fn+f6 Decrease screen brightness fn+f7Increase screen brightness fn+f8 Play, pause or resume an audio CD or a DVD fn+f9 Accessing the Quick Launch Buttons control panel Setting tiling preferencesSetting advanced preferences Quick Launch Buttons software Setting button assignments on an external keyboard Displaying the Quick Launch Buttons icon Using the embedded numeric keypad KeypadsEnabling and disabling the embedded numeric keypad Using an external numeric keypad Switching key functions on the embedded numeric keypadEnabling or disabling num lock mode as you work Enww Power Power control and light locations Power Power sources Task Recommended power source Connecting the AC adapter Standby and hibernation StandbyHibernation When you leave your work When a reliable power supply is unavailableInitiating standby, hibernation or shutdown Enww Default power settings Using emergency shutdown proceduresTurning the computer or display on or off Initiating or resuming from standby Stand by Initiating or restoring from hibernation Hibernate Power options Accessing Power Options PropertiesDisplaying the Power Meter icon Setting or changing a power scheme Setting a security prompt Processor performance controls Battery packs Inserting or removing a battery pack Charging a battery pack Monitoring the charge of the battery pack Interpreting charge indicatorsObtaining accurate charge information Displaying charge information on the screen Managing low-battery conditions Identifying low-battery conditionsLow-battery condition Critical low-battery condition Resolving low-battery conditions When external power is availableWhen a charged battery pack is available When no power source is available Calibrating a battery pack When to calibrateHow to calibrate Charging the battery pack Discharging the battery pack Conserving battery power Conserving power as you workRecharging the battery pack Storing a battery pack Disposing of a used battery packSelecting power conservation settings Drives Drive care IDE drive light Hard drive Enww Enww Optical drives DVD-ROM ±RW/R Inserting an optical disc Removing an optical disc with power Removing an optical disc without power Avoiding standby or hibernation Using the optical drive Identifying the installed optical driveMultimedia Multimedia Hardware Inserting an optical disc Removing an optical disc with power Removing an optical disc without power Using media activity hotkeys Using the QuickPlay buttons Enww Using the audio features Using the audio-in microphone jack Using the audio-out headphone jackUsing S/PDIF digital audio select models only Adjusting the volume Using the video features Using the external monitor port Using the S-Video-out jack Remote Control Select Models Only HP Mobile Remote Control PC Card version Inserting the battery PC Card version Enww Enww Storing the remote control in the PC Card slot Button quick reference PC Card version Play/Pause HP Mobile Remote Control PC Card version component functions HP Mobile Remote Control ExpressCard version Inserting the battery ExpressCard version Enww Replace the battery compartment cover Storing the remote control in the ExpressCard slot Button quick reference ExpressCard version Press to stop the current media activity, such as Press to go back to the previous track or chapter Troubleshooting the remote control Problem Possible solution Identifying preinstalled multimedia software Installing multimedia software from a CD select models onlyMultimedia software Using multimedia software Using QuickPlay software Protecting playback Protecting the CD or DVD write process Changing DVD region settings Observing the copyright warning External Media Cards Digital Media Slot cards select models only Inserting a digital card Stopping or removing a digital card Configuring a PC Card PC Cards select models only Inserting a PC Card Stopping or removing a PC Card Enww Configuring an ExpressCard ExpressCardsSelecting an ExpressCard Inserting an ExpressCard Enww Stopping or removing an ExpressCard Using a USB device Connecting a USB deviceExternal Devices Stopping a USB device Required USB software Using a 1394 device select models only Connecting a 1394 deviceStopping a 1394 device Required 1394 software Using the expansion port Memory Modules Adding or replacing memory modules Enww Enww Enww Effects of increasing memory Video memory settings select models only Wireless Select Models Only Wireless featuresIdentifying an 802.11 wireless device Wireless controls Wireless Control Description Wireless devices select models only Setting up a Wlan in your home Connecting to a Wlan in your home Connecting to a public WlanUsing wireless security features Bluetooth wireless devices select models only Wireless device status states Turning on the devices Turning off and disabling the devices Enww Modem and Local Area Network Modem Connecting the modem cable Connecting a country-specific modem cable adapter Selecting a location settingViewing the current country selection Adding new locations when traveling Select Start Control Panel Network and Internet Connections Solving travel connection problems Check the telephone line type Using preinstalled communication software Clear the check box for Wait for dial tone before dialing Local area networks Enww Security features Security Passwords Guidelines for setting passwords Passwords set in Windows QuickLock Passwords set in the Setup Utility Administrator password Power-on password Managing an administrator passwordEntering an administrator password Managing a power-on password Entering a power-on password DriveLock password Setting a DriveLock password Entering a DriveLock password Changing a DriveLock password Device security Removing DriveLock protection Critical updates Antivirus softwareFirewall software Optional security cable Setup Utility Setup Utility access Setup Utility language Setup Utility defaults Setup Utility menus Main menuSecurity menu Advanced menu Tools menu Enww Software Updates and Recovery Software updatesHP Software Update Software updates and the HP Web site Accessing computer information Downloading a Bios update Installing a Bios update Downloading and installing other software System recovery Safeguarding your informationUsing System Restore Creating a restore point Reinstalling applications Restoring to a restore pointReinstalling applications from the hard drive Reinstalling applications from discs Repairing the operating system Reinstalling the operating system Back up your system Reinstall the operating system Reinstalling device drivers and other software Update reinstalled software Enww Hardware maintenance Routine Care Battery pack TouchPad and keyboard Display Using Disk Defragmenter Using Disk CleanupDrives Regular tune-ups Traveling and shipping Troubleshooting Quick checklistComputer will not start up Computer screen is blank Software is functioning abnormally Computer is turned on, but is not responding Computer is extremely warmAn external device is not working Enww Taking the computer to a service partner Customer CarePreparing to contact Customer Care Contacting Customer Care by e-mail or telephone Enww Electrostatic discharge Preventing electrostatic dischargeHandling drives Handling internal components Grounding methods Symbols/Numerics Index Enww Wlan USB Wlan label Writable media XD-Picture Card XD Enww