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Related Manuals for HP Power Management
Summary of Contents for HP Power Management
- Page 1 Power Management User Guide...
- Page 2 Company under license. 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.
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Page 3: Table Of Contents
Hibernation ... 6 Initiating standby, hibernation or shutdown ... 7 When you leave your work ... 7 When a reliable power supply is unavailable ... 7 When using wireless communication, or readable or writable media ... 8 4 Power settings Turning the computer or display on or off ... - Page 4 Resolving low-battery conditions ... 22 Calibrating a battery ... 23 When to calibrate ... 23 How to calibrate ... 23 Conserving battery power ... 26 Conserving power as you work ... 26 Selecting power conservation settings ... 26 Storing a battery ... 27 Disposing of a used battery ...
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Page 5: Power Control And Light Locations
Power control and light locations The following illustration and table identify and describe the power control and light locations. NOTE: Your computer may look slightly different from the illustration in this chapter. Component Power button Power lights* (2) fn+f5 Description ●... - Page 6 Component Battery light Internal display switch (select models only) *The 2 power lights display the same information. The light on the power button is visible only when the computer is open. The light on the front of the computer is visible whether the computer is open or closed. Chapter 1 Power control and light locations Description On: A battery is charging.
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Page 7: Power Sources
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. Task Work in most software applications... -
Page 8: 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 9: Standby And Hibernation
Standby and hibernation Standby and hibernation are energy-saving features that conserve power and reduce startup time. They can be initiated by you or by the system. Standby CAUTION: To avoid a complete battery discharge, do not leave the computer in standby for extended periods. -
Page 10: Hibernation
Hibernation CAUTION: If the configuration of the computer is changed during hibernation, resuming from hibernation may not be possible. When the computer is in hibernation: Do not connect the computer to or disconnect the computer from an optional docking device or expansion product. -
Page 11: Initiating Standby, Hibernation Or Shutdown
Be sure that hibernation remains enabled, especially if you are operating the computer on battery power and do not have access to an external power supply. If the battery fails, hibernation saves your work to a hibernation file and shuts down the computer. -
Page 12: When Using Wireless Communication, Or Readable Or Writable Media
When using wireless communication, or readable or writable media CAUTION: To prevent possible audio and video degradation, loss of audio or video playback functionality, or loss of information, do not initiate standby or hibernation while reading from or writing to a disc or an external media card. Standby and hibernation interfere with the use of Bluetooth®... -
Page 13: Power Settings
Power settings This section explains standby, hibernation, and shutdown procedures. Turning the computer or display on or off Task Procedure Turn on the Press the power button. computer. Shut down the computer.* Turn off the display Close the computer. while the power is *If you have been registered to a network domain, the button you click is called Shut Down instead of Turn Off Computer. -
Page 14: Initiating Or Resuming From Standby
Initiating or resuming from standby Task Procedure ● Initiate standby. ● Allow the system to No action required. initiate standby. ● ● NOTE: be changed using Power Options in Windows Control Panel. Resume from user- Press the power button. initiated or system- initiated standby. -
Page 15: Initiating Or Restoring From Hibernation
Initiating or restoring from hibernation Hibernation cannot be initiated unless it is enabled. Hibernation is enabled by default. To be sure that hibernation remains enabled, select Start > Control Panel > Performance and Maintenance > Power Options > Hibernate tab. If hibernation is enabled, the Enable hibernation check box is selected. -
Page 16: Power Options
Power options You can change many of the power settings using Windows Control Panel. For example, you can set an audio alert to warn you when the battery reaches a low-power condition, or you can change the factory settings for the power button. Accessing Power Options Properties To access Power Options Properties: ●... -
Page 17: Displaying The Power Meter Icon
Displaying the Power Meter icon By default, the Power Meter icon appears in the notification area, at the far right of the taskbar, displaying different icons to indicate whether the computer is running on battery or external power. To remove the Power Meter icon from the notification area, follow these steps: Right-click the Power Meter icon in the notification area, and then click Adjust Power Properties. -
Page 18: Setting Or Changing A Power Scheme
Setting or changing a power scheme The Power Schemes tab in the Power Options Properties dialog box assigns power levels to system components. You can assign different schemes, depending on whether the computer is running on battery or external power. You can also set a power scheme that initiates standby or turns off the display or hard drive after a time interval that you specify. -
Page 19: Setting A Security Prompt
Setting a security prompt You can add a security feature that prompts you for a password when the computer is turned on, resumes from standby, or restores from hibernation. To set a password prompt: Right-click the Power Meter icon in the notification area, and then click Adjust Power Properties. -
Page 20: Processor Performance Controls
Power scheme Home/Office Desk Portable/Laptop (default) * Presentation Always On Minimal Power Management Max Battery *It is recommended that you use the Portable/Laptop power scheme. Chapter 6 Processor performance controls Processor performance while on external power Always runs at the highest performance state. -
Page 21: Batteries
Batteries 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 22: Inserting Or Removing A Battery
Inserting or removing a battery NOTE: Batteries vary in appearance by model. To insert a battery: Turn the computer upside down on a flat surface, with the battery bay away from you. 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. -
Page 23: Charging A Battery
Charging a battery To prolong battery life and optimize the accuracy of battery charge displays: WARNING! Do not charge the computer battery while you are onboard aircraft. ● To charge a new battery: ◦ Charge the battery while the computer is plugged into external power through the AC adapter. ◦... -
Page 24: Viewing Charge Displays
Viewing charge displays To view information about the status of any battery in the computer, follow either of these steps: ● Double-click the Power Meter icon in the notification area, at the far right of the taskbar. – or – ●... -
Page 25: Managing Low-Battery Conditions
Managing low-battery conditions The information in this section describes the alerts and system responses set at the factory. Some low- battery condition 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 conditions This section explains how to identify low-battery and critical low-battery conditions. -
Page 26: Resolving Low-Battery Conditions
Resolving low-battery conditions CAUTION: To reduce the risk of losing information when the computer reaches a critical low-battery condition and has initiated hibernation, do not restore power until the power lights turn off. When external power is available When external power is available, you can resolve a low-battery condition by connecting on of the following devices: ●... -
Page 27: Calibrating A Battery
Calibrating a battery When to calibrate Even if a battery is heavily used, it should not be necessary to calibrate it more than once a month. It is not necessary to calibrate a new battery. Calibrate a battery under the following conditions: ●... -
Page 28: Step 2: Discharging The Battery
Step 2: Discharging the battery Before you begin a full discharge, disable hibernation. To disable hibernation: Select Start > Control Panel > Performance and Maintenance > Power Options > Hibernate tab. Clear the Enable hibernation check box. Click Apply. The computer must remain on while the battery is being discharged. The battery can discharge whether or not you are using the computer but will discharge faster while the computer is in use. -
Page 29: Step 3: Recharging The Battery
Step 3: Recharging the battery To recharge the battery: 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. -
Page 30: Conserving Battery Power
Conserving battery power Using the battery conservation procedures and settings described in this section extends the time that a battery can run the computer from a single charge. Conserving power as you work ● Turn off wireless and local area network (LAN) connections and exit modem applications when you are not using them. -
Page 31: Storing A Battery
WARNING! 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. CAUTION: To prevent damage to a battery , do not expose it to high temperatures for extended periods of time. -
Page 32: 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 a battery; short the external contacts on a battery; or dispose of a battery in fire or water. Do not expose a battery to temperatures above 60˚C (140˚F). -
Page 33: Index
12 sources 3 power adapter 3 power button, identifying 1 power light, identifying 1 Power Meter icon 13 power settings 9 power supply 7 processor performance controls 16 readable media 8 reset (emergency shutdown procedures) 9 screen saver 26...