Troubleshooting wireless connection problems | HP dv4-2160us

Troubleshooting wireless connection problems

Some possible causes for wireless connection problems include the following:

●Network configuration (SSID or security) has been changed.

●Wireless device is not installed correctly or has been disabled.

●Wireless device or router hardware has failed.

●Wireless device encountered interference from other devices.

NOTE: Wireless networking devices are included with select computer models only. If wireless networking is not listed in the feature list on the side of the original computer package, you may add wireless networking capability to the computer by purchasing a wireless networking device.

Before working your way through the sequence of possible solutions to your network connection problem, be sure that device drivers are installed for all wireless devices.

Use the procedures in this chapter to diagnose and repair a computer that does not connect to the network you want to use.

Cannot connect to a WLAN

If you have a problem connecting to a WLAN, confirm that the integrated WLAN device is properly installed on your computer:

NOTE: Windows includes the User Account Control feature to improve the security of your computer. You may be prompted for your permission or password for tasks such as installing software, running utilities, or changing Windows settings. Refer to Help and Support for more information.

1.Select Start > Control Panel > System and Security.

2.In the System area, click Device Manager.

3.Click the arrow next to Network adapters to expand the list and show all adapters.

4.Identify the WLAN device from the Network adapters list. The listing for a WLAN device may include the term wireless, wireless LAN, WLAN, Wi-Fi, or 802.11.

If no WLAN device is listed, either your computer does not have an integrated WLAN device, or the driver for the WLAN device is not properly installed.

For more information on troubleshooting WLANs, refer to the Web site links provided in Help and Support.

28 Chapter 3 Wireless, local area network, and modem

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HP dv4-2160us manual Troubleshooting wireless connection problems, Cannot connect to a Wlan

Contents

Page Product notice Safety warning notice Iv Safety warning notice Table of contents Pointing devices and keyboard Multimedia HP Media Remote Control Select Models Only Drives External media cards 149 Xii Using HP QuickWeb select models only Starting HP QuickWeb Disabling and enabling HP QuickWeb Features Identifying hardware Top components ComponentsTouchPad Lights Components Features Panel System and Security Power Options Buttons, speakers, and fingerprint reader Keys Fn key Display Front components Rear component Right-side components Left-side components Bottom components Wireless antennas Additional hardware components Labels Wireless, local area network, and modem Using wireless devices Identifying wireless and network status icons Using the wireless controls Using the wireless button Using HP Wireless Assistant Using HP Connection Manager select models only Using operating system controls Using a Wlan Setting up a Wlan Use a wireless transmitter with built-in security Protecting your Wlan Connecting to a Wlan Roaming to another network Using HP Mobile Broadband select models only Inserting a SIM Removing a SIM Using Bluetooth wireless devices select models only Bluetooth and Internet Connection Sharing ICS Troubleshooting wireless connection problems Cannot connect to a Wlan Network icon is not displayed Cannot connect to a preferred networkCurrent network security codes are unavailable Cannot connect to the wireless router Wlan connection is very weak Using the modem select models only Connecting a modem cable Selecting a location setting Connecting a country-specific modem cable adapterViewing the current location selection Adding new locations when traveling Select Start Devices and Printers Solving travel connection problems Check the telephone line type Connecting to a local area network Using the TouchPad Pointing devices and keyboard Setting TouchPad preferences Connecting an external mouse Using keyboard hotkeys Function Hotkey Displaying system information Opening Help and Support Opening the Print Options window Switching the screen imageOpening a Web browser Initiating Sleep Initiating QuickLockDecreasing screen brightness Increasing screen brightness Playing, pausing or resuming an audio CD or a DVD Stopping an audio CD or a DVDPlaying previous track or section of an audio CD or a DVD Playing next track or section of an audio CD or a DVD Using keypads Num lk key Using the embedded numeric keypad Using an optional external numeric keypadSwitching key functions on the embedded numeric keypad Enabling and disabling the embedded numeric keypad Cleaning the TouchPad and keyboard Multimedia features Multimedia Identifying your multimedia components Environmental Notices Using the MediaSmart button select models only Adjusting the volume Using the media activity hotkeys Using HP MediaSmart software Using other preinstalled multimedia softwareInstalling multimedia software from a disc Multimedia software Audio Connecting external audio devicesChecking your audio functions Connecting an external monitor or projector Video Connecting an Hdmi device Configuring audio for Hdmi Watching TV select models only Webcam Troubleshooting Computer does not detect the optical drive Disc does not play Disc does not play automatically DVD movie stops, skips, or plays erratically DVD movie is not visible on an external display Remove any discs from the optical drive Obtaining the latest HP device drivers Obtaining the latest Windows device drivers HP Mobile Remote Control Select Models Only Component functions Button quick reference Button Function Enter key on the computer keyboard Mute Press the button to mute speaker volume Inserting or replacing the battery Troubleshooting HP Media Remote Control Select Models Only Button quick reference ButtonFunction For some multimedia software HP Media Remote Control Select Models Only Inserting or replacing the battery Troubleshooting Power management Setting power optionsUsing power-saving states Initiating and exiting Sleep Using the battery meter Initiating and exiting Hibernation Using power plans Setting password protection on wakeupViewing the current power plan Selecting a different power plan Switching between graphics modes select models only Using external AC power Connecting the AC adapter Testing an AC adapter Finding battery information in Help and Support Using battery powerUsing Battery Check Displaying the remaining battery charge Inserting or removing the battery Charging a battery Managing low battery levels Maximizing battery discharge timeIdentifying low battery levels Resolving a low battery level Fully charge the battery Calibrating a batteryDisable Hibernation and Sleep Fully recharge the battery Discharge the batteryReenable Hibernation and Sleep Conserving battery power Storing a batteryDisposing of a used battery Replacing the battery Shutting down the computer Click Shut down Drives Handling drives Identifying the installed optical drive Optical drive Using optical discs DVD±RW/R Selecting the right disc CD-R discsCD-RW discs DVD±R discs LightScribe DVD+R discs Playing a CD, DVD, or BDBlu-ray Disc Configuring AutoPlay Changing DVD region settings Observing the copyright warning Copying a CD or DVD Creating burning a CD or DVD Removing an optical disc CD, DVD, or BD Using external drives Using Disk Cleanup Using Disk DefragmenterImproving hard drive performance Identifying HP ProtectSmart Hard Drive Protection status Using HP ProtectSmart Hard Drive Protection software Replacing the hard drive Page Page Tighten the hard drive cover screws Replacing the hard drive Replacing a drive in the SmartBay Page Connecting a USB device Using a USB deviceExternal devices Removing a USB device Using an eSATA device Connecting an eSATA device Using the expansion port Removing an eSATA device External media cards Using Digital Media Slot cardsInserting a digital card Removing a digital card Configuring an ExpressCard Using ExpressCardsInserting an ExpressCard Page Removing an ExpressCard Memory modules Page Page Page Security Protecting the computer Using passwords Setting passwords in Windows Setting passwords in Setup Utility Administrator password Power-on password Entering an administrator password Using antivirus software Using firewall software Installing critical security updates Installing an optional security cable Using the fingerprint reader select models only Locating the fingerprint reader Registering fingerprints Using your registered fingerprint to log on to Windows Setup Utility Bios Starting Setup Utility Changing the language of Setup Utility Using Setup UtilityNavigating and selecting in Setup Utility Restoring default settings in Setup Utility Setup Utility menus Exiting Setup UtilityMain menu Security menu System Configuration menu Diagnostics menu Software updates Updating the Bios Determining the Bios version Downloading a Bios update Updating programs and drivers Backup and recovery Creating recovery discs Backing up your information Using Windows Backup and Restore Select Start All Programs Maintenance Backup and Restore Using system restore points When to create restore pointsCreate a system restore point Restore to a previous date and time Performing a recovery Recovering from the recovery discs Symbols/Numerics Index DVD Jacks Ssid Wwan