HP 430239-001 manual Computer screen is blank

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Troubleshooting

The computer screen is blank

If the computer is on but the screen is blank, the computer may be in the Sleep state or in Hibernation or may not be set to display the image on the computer screen.

Try the suggestions below to resolve the issue:

■To exit Sleep or Hibernation, briefly press the power button.

Sleep and Hibernation are energy-saving features that can turn off the display. Sleep and Hibernation can be initiated by the system while the computer is on but not in use, or when the computer has reached a low battery level. To change these and other power settings, select Start > Control Panel > System and Maintenance > Power Options.

■To transfer the image to the computer screen, press fn+f4.

On most models, when an optional external display device, such as a monitor, is connected to the computer, the image can be displayed on the computer screen or the external display, or on both devices simultaneously. When you press fn+f4 repeatedly, the image alternates among the computer display, one or more external display devices, and simultaneous displays on all devices.

Getting Started

3–3

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Contents Getting Started Page Contents Troubleshooting Index Identify required hardware First-time setupComponent Refer to Appendix C, Backup and recovery, for instructions Set up the computerInsert the battery Connect the computer to external power First-time setup Turn on the computer First-time setup Set up the software Create recovery discs recommended Install additional hardware and software Identify and install hardwareNext steps Computer includes software that may be Locate and install softwareProtect the computer Protect the computer from virusesProtect your system files Protect your privacy Protect the computer from power surgesUse the computer safely Next steps Connect to a computer network Locate the user guides Update your softwareTurn off the computer correctly Troubleshooting resources TroubleshootingComputer is unable to start up Quick troubleshootingComputer screen is blank Software is functioning abnormally Computer is turned on but not responding Computer is unusually warm An external device is not working Home wireless network connection is not working Customer Care Help and SupportContact Customer Care by e-mail or telephone Prepare to contact Customer CareGetting Started Top components Keys Pointing devices Wireless antennae select models only Rear components Front componentsRight-side components Left-side components Bottom components Choose an ISP Connect to the Internet from your homeUse the New Connection Wizard Choose the type of Internet connection Safeguard your data Backup and recoveryBack up specific files or folders Back up the systemBack up the entire hard drive Back up modifications made to the system Schedule backups Recover the system Create recovery discs highly recommended To create a set of recovery discs Performing a recovery from the recovery discs Perform a recoveryInitiating a recovery from the hard drive recovery partition Operating environment SpecificationsRated input power Index Index Keys Embedded numeric keypad A-3 Regulatory, Safety Environmental Notices Index-5