User manual HP COMPAQ PRESARIO C550EM
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Manual abstract: user guide HP COMPAQ PRESARIO C550EM
Detailed instructions for use are in the User's Guide.
[. . . ] Notebook PC User Guide
© Copyright 2007 Hewlett-Packard Development Company, L. P. 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 access Power Options, or to change the power plan, click the battery meter icon and select an item from the list.
Different battery 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 critical battery level. Click the Notification Area tab.
Setting power options
Under System icons, clear the Power check box to hide the battery meter icon, or select the Power check box to display the battery meter icon. Click OK.
Using power plans
A power plan is a collection of system settings that manages how the computer uses power. You can change power plan settings or create your own power plan.
Viewing the current power plan
Move the pointer over the battery meter icon in the notification area, at the far right of the taskbar. or Select Start > Control Panel > System and Maintenance > Power Options.
Selecting a different power plan
Click the battery meter icon in the notification area, and then select a power plan from the list. or Select Start > Control Panel > System and Maintenance > Power Options, and then select a power plan from the list.
Customizing power plans
1. Click the battery meter icon in the notification area, and then click More power options. or Select Start > Control Panel > System and Maintenance > Power Options. Change the Turn off the display and Put the computer to sleep timeout settings, as needed. To change additional settings, click Change advanced power settings and make your changes.
Setting password protection on wakeup
To set the computer to prompt for a password when the computer exits Sleep or Hibernation, follow these steps: 1. Select Start > Control Panel > System and Maintenance > Power Options. Click Save changes.
Chapter 3 Power management
Using battery power
When a charged battery is in the computer and the computer is not plugged into external power, the computer runs on battery power. When the computer is plugged into external AC power, the computer runs on AC power. If the computer contains a charged battery and is running on external AC power supplied through the AC adapter, the computer switches to battery power if the AC adapter is disconnected from the computer. NOTE The display brightness is decreased to save battery life when you disconnect AC power. To increase display brightness, use the fn+f8 hotkey or reconnect the AC adapter. You can keep a battery in the computer or in storage, depending on how you work. Keeping the battery in the computer whenever the computer is plugged into AC power charges the battery and also protects your work in case of a power outage. However, a battery in the computer slowly discharges when the computer is off and unplugged from external power. To reduce potential safety issues, use only the battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased from HP. [. . . ] A third USB port on the right side of the computer is available on select models only. The USB ports on the computer support USB 2. 0 and USB 1. 1 devices.
Connecting a USB device
CAUTION device. To prevent damage to the USB connectors, use minimal force to connect a USB
To connect a USB device to the computer, connect the USB cable of the device to the USB port. The operating system will issue a sound to indicate that a device has been connected. [. . . ]
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