HP Dv7-2040us - Pavilion Entertainment - Core 2 Quad GHz User Manual
Power management
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- Maintenance and service manual (165 pages) ,
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Summary of Contents for HP Dv7-2040us - Pavilion Entertainment - Core 2 Quad GHz
- Page 1 Power Management User Guide...
- Page 2 © Copyright 2009 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.
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Page 3: Table Of Contents
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 ........................3 Using power plans ..........................4 Viewing the current power plan ................... 4 Selecting a different power plan .................. - Page 4 Conserving battery power ........................20 Storing a battery ..........................20 Disposing of a used battery ........................ 21 Replacing the battery ......................... 21 4 Shutting down the computer Index ................................... 23...
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Page 5: Setting Power Options
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. -
Page 6: Initiating And Exiting Hibernation
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 when the battery reaches a critical battery level. -
Page 7: Using The Battery Meter
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. ●... -
Page 8: Using Power Plans
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. -
Page 9: Setting Password Protection On Wakeup
Setting password protection on wakeup To set the computer to prompt for a password when the computer exits Sleep or Hibernation, follow these steps: Select Start > Control Panel > System and Maintenance > Power Options. In the left pane, click Require a password on wakeup. Click Change Settings that are currently unavailable. -
Page 10: Using External Ac Power
Using external AC power External AC power is supplied through one of the following devices: WARNING! To reduce potential safety issues, use only the AC adapter provided with the computer, a replacement AC adapter provided by HP, or a compatible AC adapter purchased from HP. ●... -
Page 11: Connecting The Ac Adapter
Connecting the AC adapter WARNING! To reduce the risk of electric shock or damage to the equipment: Plug the power cord into an AC outlet that is easily accessible at all times. Disconnect power from the computer by unplugging the power cord from the AC outlet (not by unplugging the power cord from the computer). -
Page 12: Using Battery Power
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. -
Page 13: Finding Battery Information In Help And Support
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 ●... -
Page 14: Using Battery Check
Using Battery Check Battery Check, a part of the Total Care Advisor, provides information on the status of the battery installed in the computer. To run Battery Check: Connect the AC adapter to the computer. NOTE: The computer must be connected to external power for Battery Check to function properly. Select Start >... -
Page 15: Displaying The Remaining Battery Charge
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. -
Page 16: Inserting Or Removing The Battery
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: Turn the computer upside down on a flat surface. -
Page 17: Charging A Battery
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. -
Page 18: Maximizing Battery Discharge Time
Maximizing battery discharge time Battery discharge time varies depending on the features you use while on battery power. Maximum discharge time gradually shortens, as the battery storage capacity naturally degrades. Tips for maximizing battery discharge time: ● Lower the brightness on the display. ●... -
Page 19: Managing Low Battery Levels
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. -
Page 20: Resolving A Low Battery Level When The Computer Cannot Exit Hibernation
Resolving a low battery level when the computer cannot exit Hibernation When the computer lacks sufficient power to exit Hibernation, follow these steps: Insert a charged battery or plug the computer into external power. Exit Hibernation by pressing the power button. Chapter 3 Using battery power... -
Page 21: Calibrating A Battery
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. -
Page 22: Step 3: Discharge The Battery
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. - Page 23 Click OK. Click Save changes. Calibrating a battery...
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Page 24: Conserving Battery Power
Conserving battery power ● Select low power-use settings through Power Options in Windows Control Panel. ● Turn off wireless and local area network (LAN) connections and exit modem applications when you are not using them. ● Disconnect external devices that are not plugged into an external power source, when you are not using them. -
Page 25: Disposing Of A Used Battery
Disposing of a used battery WARNING! To reduce the risk of fire or burns, do not disassemble, crush, or puncture; do not short external contacts; do not dispose of in fire or water. Refer to the Regulatory, Safety and Environmental Notices for battery disposal information. Replacing the battery 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. -
Page 26: Shutting Down The Computer
Shutting down the computer CAUTION: Unsaved information will be lost when the computer is shut down. The Shut Down command closes all open programs, including the operating system, and then turns off the display and computer. Shut down the computer under any of the following conditions: ●... -
Page 27: Index
Index AC adapter, connecting 7 low battery level 15 battery operating system 22 calibrating 17 charging 13, 17 power conserving power 20 connecting 7 discharging 14 conserving 20 disposing 21 inserting 12 low battery levels 15 readable media 1 recharging 18 removing 12 replacing 21 shutdown 22...