User manual DELL PP23LB

[. . . ] c o m Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. Abbreviations and Acronyms For a complete list of abbreviations and acronyms, see "Glossary" on page 159. ____________________ Information in this document is subject to change without notice. Reproduction in any manner whatsoever without the written permission of Dell Inc. [. . . ] 3 Follow the instructions on the screen. A solid blue screen appears TURN T H E C O M P U T E R O F F -- If you are unable to get a response by pressing a key on your keyboard or moving your mouse, press and hold the power button for at least 8 to 10 seconds until the computer turns off. Then restart your computer. Other software problems CHECK THE SOFTWARE DOCUMENTATION OR CONTACT THE SOFTWARE MANUFACTURER FOR TROUBLESHOOTING INFORMATION -- · · Ensure that the program is compatible with the operating system installed on your computer. Ensure that your computer meets the minimum hardware requirements needed to run the software. If necessary, uninstall and then reinstall the program. · · · BA C K U P Y O U R F I L E S I M M E D I A T E L Y US E A V I R U S - S C A N N I N G P R O G R A M T O C H E C K T H E H A R D D R I V E , F L O P P Y D I S K S , O R C DS SAVE AND CLOSE ANY OPEN FILES OR PROGRAMS AND SHUT DOWN YOUR C O M P U T E R T H R O U G H T H E Start M E N U S C A N T H E C O M P U T E R F O R S P Y W A R E -- If you are experiencing slow computer performance, you frequently receive pop-up advertisements, or you are having problems connecting to the Internet, your computer might be infected with 92 Solving Problems spyware. Use an anti-virus program that includes anti-spyware protection (your program may require an upgrade) to scan the computer and remove spyware. For more information, go to support. dell. com and search for the keyword spyware. R U N T H E D E L L D I A G N O S T I C S -- If all tests run successfully, the error condition is related to a software problem. See "Dell Diagnostics" on page 77. Memory Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. IF YOU RECEIVE AN INSUFFICIENT MEMORY MESSAGE -- · · · · · · · Save and close any open files and exit any open programs you are not using to see if that resolves the problem. If necessary, install additional memory (see "Memory" on page 117). Reseat the memory modules to ensure that your computer is successfully communicating with the memory (see "Memory" on page 117). Run the Dell Diagnostics (see "Dell Diagnostics" on page 77). Reseat the memory modules to ensure that your computer is successfully communicating with the memory (see "Memory" on page 117). Ensure that you are following the memory installation guidelines (see "Memory" on page 117). Run the Dell Diagnostics (see "Dell Diagnostics" on page 77). IF YOU EXPERIENCE OTHER MEMORY PROBLEMS -- Network Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. C H E C K T H E N E T W O R K C A B L E C O N N E C T O R -- Ensure that the network cable is firmly inserted into both the network connector on the back of the computer and the network jack. C H E C K T H E N E T W O R K L I G H T S O N T H E N E T W O R K C O N N E C T O R -- No light indicates that no network communication exists. Replace the network cable. Solving Problems 93 RESTART THE COMPUTER AND LOG ON TO THE NETWORK AGAIN C H E C K Y O U R N E T W O R K S E T T I N G S -- Contact your network administrator or the person who set up your network to verify that your network settings are correct and that the network is functioning. Power Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide C H E C K T H E P O W E R L I G H T -- When the power light is lit or blinking, the computer has power. If the power light is blinking, the computer is in standby mode--press the power button to exit standby mode. If the light is off, press the power button to turn on the computer. NOTE: For information on standby mode, see "Power Management Modes" on page 48. C H A R G E T H E B A T T E R Y -- The battery charge may be depleted. 1 Reinstall the battery. NOTE: Battery operating time (the time the battery can hold a charge) decreases over time. Depending on how often the battery is used and the conditions under which it is used, you may need to purchase a new battery during the life of your computer. C H E C K T H E B A T T E R Y S T A T U S L I G H T -- If the battery status light flashes orange or is a steady orange the battery charge is low or depleted. Connect the computer to an electrical outlet. If the battery status light flashes green and orange, the battery is too hot to charge. Shut down the computer, disconnect the computer from the electrical outlet, and then let the battery and computer cool to room temperature. If the battery status light rapidly flashes orange, the battery may be defective. [. . . ] Graphics-based software, such as Windows operating systems, displays in video modes that can be defined as x horizontal pixels by y vertical pixels by z colors. Character-based software, such as text editors, displays in video modes that can be defined as x columns by y rows of characters. Glossary 173 video resolution -- See resolution. virus -- A program that is designed to inconvenience you or to destroy data stored on your computer. A virus program moves from one computer to another through an infected disk, software downloaded from the Internet, or e-mail attachments. [. . . ]