User manual SONY VAIO VGN-NW225F/P

[. . . ] The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. [. . . ] To display the percentage of remaining battery charge and the current power plan (or power scheme in Windows XP), move the pointer over the power meter icon. To access Power Options, or to change the power plan, click the power meter icon and select an item from the list. Different power meter icons indicate whether the computer is running on battery or external power. The icon also displays a message if the battery has reached a low or critical battery level. Using power plans A power plan (or power scheme in Windows XP) is a collection of system settings that manages how the computer uses power. Power plans can help you conserve power or maximize performance. Viewing the current power plan Use any of the following methods: Click the power meter icon in the notification area, at the far right of the taskbar. Windows 7--Select Start > Control Panel > System and Security > Power Options. Windows XP--Select Start > Control Panel > Performance and Maintenance > Power Options. Selecting a different power plan Use any of the following methods: Click the power meter icon in the notification area, and then select a power plan from the list. Windows 7--Select Start > Control Panel > System and Security > Power Options, and then select an item from the list. Windows XP--Select Start > Control Panel > Performance and Maintenance > Power Options, and then select an item from the list. Customizing power plans Windows 7 1. Click the power meter icon in the notification area, and then click More power options. ­ or ­ Select Start > Control Panel > System and Security > Power Options. Select a power plan, and then click Change plan settings. 22 Chapter 4 Power management 3. Computer battery life varies, depending on power management settings, programs running on the computer, display brightness, external devices connected to the computer, and other factors. Finding battery information in Help and Support in Windows 7 Help and Support provides the following tools and information about the battery: Battery Check tool to test battery performance Information on calibration, power management, and proper care and storage to maximize battery life Information on battery types, specifications, life cycles, and capacity To access battery information: Select Start > Help and Support > Learn > Power Plans: Frequently Asked Questions. Using Battery Check in Windows 7 Battery Check in Help and Support provides information on the status of the battery installed in the computer. NOTE: The computer must be connected to external power for Battery Check to work properly. Select Start > Help and Support > Troubleshoot > Power, Thermal and Mechanical. Click the Power tab, and then click Battery Check. Battery Check examines the battery and its cells to see if they are functioning properly, and then reports the results of the examination. Displaying the remaining battery charge Move the pointer over the power meter icon in the notification area, at the far right of the taskbar. Maximizing battery discharge time Battery discharge time varies depending on the features you use while on battery power. Maximum discharge time gradually decreases as the battery storage capacity naturally degrades. Tips for maximizing battery discharge time: Lower the brightness on the display. Remove the battery from the computer when it is not being used or charged. Store the battery in a cool, dry location. Windows 7--Select the Power saver setting in Power Options. 24 Chapter 4 Power management Managing low battery levels The information in this section describes the alerts and system responses set at the factory. Some lowbattery alerts and system responses can be changed using Power Options in Windows Control Panel. Preferences set using Power Options do not affect lights. Identifying low battery levels When a battery that is the sole power source for the computer reaches a low or critical battery level, the following behavior occurs: The battery light (select models only) indicates a low or critical battery level. [. . . ] When traveling by air, carry the computer as hand luggage; do not check it in with the rest of your bags. CAUTION: Avoid exposing a drive to magnetic fields. Security devices with magnetic fields include airport walk-through devices and security wands. Airport conveyer belts and similar security devices that check carry-on baggage use X-rays instead of magnetism and do not damage drives. In-flight computer use is at the discretion of the airline. [. . . ]