HP 435816-001 manual An external device is not working, Wlan connection is not working

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Troubleshooting

An external device is not working

Follow these suggestions if an external device does not function as expected:

Turn on the device as instructed in the device user guide. Some devices may not be powered by the computer, and must be turned on before the computer is turned on.

Be sure that all device connections are secure.

Be sure that the device is receiving electrical power.

Be sure that the device, especially if it is an older one, is compatible with your operating system. For compatibility information, refer to the device manufacturer’s Web site.

Be sure that the correct drivers are installed and updated. Drivers may be available on a disc included with the device or on the device manufacturer’s Web site. For more information about updating drivers, select Start > Help and Support.

The WLAN connection is not working

If a WLAN connection is not working as expected, follow these suggestions:

Be sure that the wireless light on the computer is on. If the light is off, press the wireless button to turn it on.

Be sure that the computer wireless antennae are free from obstructions.

Be sure that the cable or DSL modem and its power cord are properly connected, and the lights are on.

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Getting Started

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Contents Getting Started Page Contents Next steps Index First-time setup Identifying required hardwareComponent Setting up the computer Refer to Appendix B, Backup and recovery, for instructionsInsert the battery Connect the computer to external power Turn on the computer First-time setup Set up the software Create recovery discs recommendedQuick tour Top components Front components Left-side components Right-side components ComponentComponentRear components Bottom components Wireless antennae select models only Next steps Protecting the computerProtecting the computer from viruses Protecting the computer from power surges Protecting your system filesProtecting your privacy Using the computer safely Next steps Connecting to a computer network Installing additional hardware and software Identifying and installing hardwareLocating and installing software Updating the software installed on the computer Select Start All Programs Software SetupFinding the user guides Turning off the computer correctlyNext steps Troubleshooting Troubleshooting resourcesQuick troubleshooting Computer is unable to start up Computer screen is blank Software is functioning abnormally Computer is turned on but not respondingComputer is unusually warm An external device is not working Wlan connection is not workingHelp and Support Contacting technical support Connect to the Internet from your home Choosing an ISPUsing the New Connection Wizard Choosing the type of Internet connectionConnect to the Internet from your home Backup and recovery Creating recovery discsWhen to back up Backing up your informationBack up suggestions Backing up specific files or folders Backing up the entire hard driveCreating recovery points Scheduling backups Performing a recovery Performing a recovery from the recovery discsPerforming a recovery from the hard drive Initiating a recovery in WindowsSpecifications Operating environmentRated input power Index Index Regulatory, Safety and Envi­ ronmental Notices Index-4