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Turning Off the Computer To properly turn off the computer, first shut down the operating system software. In Windows Vista, click Start, click the arrow on the lower right corner of the Start menu, then select Shut Down. The computer automatically shuts down. In Windows XP Professional, click Start > Shut Down. In Windows XP Home, click Start > Turn Off Computer. Depending on the operating system, pressing the power button may cause the computer to enter a low-power or “standby” state instead of automatically turning the power off. This allows you to conserve energy without closing software applications; later, you can start using the computer immediately without having to restart the operating system and without losing any data. CAUTION: Manually forcing the computer off will cause the loss of any unsaved data. To force the computer off manually and bypass the “standby state,” press and hold the power button for four seconds. On some models, you can reconfigure the power button to work in On/Off mode by running Computer Setup. Refer to the Computer Setup (F10) Utility Guide for more information about using the Computer Setup utility. Finding More Information The following publications are available on the computer hard drive or on the CD/DVD included with your computer: Quick Setup & Getting Started ENWW NOTE: Not all of the publications listed are included on all models. . Quick Setup & Getting Started (also available in print)—Helps you connect the computer and peripheral devices and set up factory- provided software; also includes basic troubleshooting information should you encounter any problems during initial startup. . Hardware Reference Guide—Provides an overview of the product hardware, as well as instructions for upgrading this series of computers; includes information on RTC batteries, memory, and power supply. . Computer Setup (F10) Utility Guide—Provides instructions on using this tool to reconfigure or modify default settings for maintenance purposes or when installing new hardware devices. . Desktop Management Guide—Provides definitions and “how to” instructions for security and Intelligent Manageability features that are preinstalled on some models. . Troubleshooting Guide—A comprehensive guide that provides helpful hints for troubleshooting this computer and scenarios for resolving possible hardware or software problems; includes information about diagnostic codes, as well as information on running the diagnostics utility. . Safety & Regulatory Information Guide—Provides safety and regulatory information that ensures compliance with U.S., Canadian, and various international regulations. Accessing the User Guides HP user guides and HP Insight Diagnostics are available on the hard drive (some models) or on the CD/DVD included with your computer. They are also available at To access HP user guides on the hard drive: ^ Select Start > All Programs > HP User Manuals. To access HP Insight Diagnostics: ^ Refer to Accessing HP Insight Diagnostics in this guide. ENWW Finding More Information To access the HP Backup and Recovery Manager User Guide: ^ Select Start > HP Backup and Recovery > HP Backup and Recovery Manager Manual. The menu and books are displayed in the language chosen during initial system setup or as specified later in the Windows Regional Settings. If the Regional Settings do not match one of the supported languages, the menu and books are displayed in English. Before You Call for Technical Support WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching. If you are having problems with the computer, try the appropriate solutions below to try to isolate the exact problem before calling for technical support. . Run the diagnostics utility. Refer to the Troubleshooting Guide for more information. . Run the Drive Protection System (DPS) Self-Test in Computer Setup. Refer to the Computer Setup (F10) Utility Guide for more information. NOTE: The Drive Protection System (DPS) Self-Test software is available on some models only. . Check the power LED on the front of the computer to see if it is flashing red. The flashing lights are error codes that will help you diagnose the problem. Refer to Interpreting POST Diagnostic Front Panel LEDs and Audible Codes on page 11 in this guide for details. . If the screen is blank, plug the monitor into a different video port on the computer if one is available. Or, change out the monitor with a monitor that you know is functioning properly. . If you are working on a network, plug another computer with a different cable into the network connection. There may be a problem with the network plug or cable. . If you recently added new hardware, remove the hardware and see if the ...