HP (Hewlett-Packard) CQ50 user manual

User manual for the device HP (Hewlett-Packard) CQ50

Device: HP (Hewlett-Packard) CQ50
Size: 0,69 MB
Date of adding : 2013-12-04 17:52:38
Number of pages: 26
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HP (Hewlett-Packard) CQ50 user manual
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Summary of the content on the page No. 1

Power Management
User Guide

Summary of the content on the page No. 2

© Copyright 2008 Hewlett-Packard Product notice Development Company, L.P. This user guide describes features that are Windows is a U.S. registered trademark of common to most models. Some features Microsoft Corporation. may not be available on your computer. 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 constru

Summary of the content on the page No. 3

Table of contents 1 Setting power options Using power-saving states ................................................................................................................... 1 Initiating and exiting Sleep ................................................................................................... 1 Initiating and exiting Hibernation .......................................................................................... 2 Using the battery meter ..............................

Summary of the content on the page No. 4

Index ................................................................................................................................................................... 21 iv

Summary of the content on the page No. 5

1 Setting power options Using power-saving states The computer has two power-saving states enabled at the factory: Sleep and Hibernation. When Sleep is initiated, the power lights blink and the screen clears. Your work is saved to memory, letting you exit Sleep faster than exiting Hibernation. If the computer is in the Sleep state for an extended period or if the battery reaches a critical battery level while in the Sleep state, the computer initiates Hibernation. When Hibernation is initiated,

Summary of the content on the page No. 6

When the computer exits Sleep, the power lights turn on and your work returns to the screen where you stopped working. NOTE: If you have set a password to be required on wakeup, you must enter your Windows password before your work will return to the screen. Initiating and exiting Hibernation The system is set at the factory to initiate Hibernation after 120 minutes (2 hours) of inactivity when running on battery power, 1,080 minutes (18 hours) of inactivity when running on external power, or wh

Summary of the content on the page No. 7

Using the battery meter The battery meter is located in the notification area, at the far right of the taskbar. The battery meter allows you to quickly access power settings, view remaining battery charge, and select a different power plan. To display the percentage of remaining battery charge and the current power plan, move the pointer ● over the battery meter icon. ● To access Power Options, or to change the power plan, click the battery meter icon and select an item from the list. Different

Summary of the content on the page No. 8

Using power plans A power plan is a collection of system settings that manages how the computer uses power. Power plans can help you conserve power or maximize performance. 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 b

Summary of the content on the page No. 9

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. 2. In the left pane, click Require a password on wakeup. 3. Click Change Settings that are currently unavailable. 4. Click Require a password (recommended). 5. Click Save changes. Setting password protection on wakeup 5

Summary of the content on the page No. 10

2 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 l

Summary of the content on the page No. 11

Finding battery information in Help and Support The Battery information section of the Help and Support Learning Center provides the following tools and information: ● 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 > Learning Center > HP Power and Battery Lear

Summary of the content on the page No. 12

Displaying the remaining battery charge ▲ Move the pointer over the battery meter icon in the notification area, at the far right of the taskbar. – or – View the estimated number of minutes of battery charge remaining in Windows Mobility Center: Click the battery meter icon, and then click Windows Mobility Center. ▲ – or – Select Start > Control Panel > Mobile PC > Windows Mobility Center. The time shown indicates the approximate running time remaining on the battery if the battery continues to

Summary of the content on the page No. 13

Inserting or removing the battery CAUTION: Removing a battery that is the sole power source can cause loss of information. To prevent loss of information, initiate Hibernation or shut down the computer through Windows before removing the battery. To insert the battery: 1. Turn the computer upside down on a flat surface. 2. Insert the battery into the battery bay (1) and rotate it downward until it is seated (2). The battery release latch (3) automatically locks the battery into place. To remove

Summary of the content on the page No. 14

3. Pivot the battery (2) upward and remove it from the computer (3). 10 Chapter 2 Using battery power

Summary of the content on the page No. 15

Charging a battery WARNING! Do not charge the computer battery while you are onboard aircraft. The battery charges whenever the computer is plugged into external power through an AC adapter, an optional power adapter, an optional expansion product, or an optional docking device. The battery charges whether the computer is off or in use, but it charges faster when the computer is off. Charging may take longer if a battery is new, has been unused for 2 weeks or more, or is much warmer or cooler th

Summary of the content on the page No. 16

Managing low battery levels The information in this section describes the alerts and system responses set at the factory. Some low- battery 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 battery level, the battery light blinks. If a low battery level is not resolved, the computer enters a cri

Summary of the content on the page No. 17

Resolving a low battery level CAUTION: To reduce the risk of losing information when the computer reaches a critical battery level and has initiated Hibernation, do not restore power until the power lights turn off. Resolving a low battery level when external power is available Connect one of the following devices: ▲ AC adapter ● Optional power adapter ● Resolving a low battery level when a charged battery is available 1. Turn off the computer or initiate Hibernation. 2. Remove the discharged ba

Summary of the content on the page No. 18

Calibrating a battery Calibrate a battery under the following conditions: ● When battery charge displays seem inaccurate ● When you observe a significant change in battery run time Even if a battery is heavily used, it should not need to be calibrated more than once a month. It is also not necessary to calibrate a new battery. Step 1: Fully charge the battery WARNING! Do not charge the computer battery while you are onboard aircraft. NOTE: The battery charges whether the computer is off or in us

Summary of the content on the page No. 19

Step 3: Discharge the battery The computer must remain on while the battery is being discharged. The battery can discharge whether or not you are using the computer, but the battery will discharge faster while you are using it. If you plan to leave the computer unattended during the discharge, save your information before ● beginning the discharge procedure. If you use the computer occasionally during the discharge procedure and have set energy-saving ● timeouts, expect the following performance

Summary of the content on the page No. 20

Step 4: Fully recharge the battery To recharge the battery: 1. Plug the computer into external power and maintain external power until the battery is fully recharged. When the battery is recharged, the battery light on the computer turns off. You can use the computer while the battery is recharging, but the battery will charge faster if the computer is off. 2. If the computer is off, turn it on when the battery is fully charged and the battery light has turned off. Step 5: Reenable Hibernation a


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