HP Power Management - Manuals

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 byunplugging the power cord from t...

3 Standby and hibernation Standby and hibernation are energy-saving features that conserve power and reduce startup time. Theycan 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. Connect the compu...

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 orexpansion product. Do not add or re...

Initiating standby, hibernation or shutdown The following sections explain when to initiate standby or hibernation and when to shut down thecomputer. NOTE: You cannot initiate any type of networking connection or perform any computer functions while the computer is in standby or hibernation. When yo...

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 writingto a disc or an external media card. S...

4 Power settings This section explains standby, hibernation, and shutdown procedures. Turning the computer or display on or off Task Procedure Result Turn on thecomputer. Press the power button. ● The power lights turn on. ● The operating system loads. Shut down thecomputer.* 1. Save your work and c...

Initiating or resuming from standby Task Procedure Result Initiate standby. ● With the computer on, press fn+f5 . ● Select Start > Turn Off Computer > Stand by .* In Windows XP Professional, if Stand by is not displayed: a. Click the down arrow. b. Select Stand by from the list. c. Click OK . ...

5 Power options You can change many of the power settings using Windows Control Panel. For example, you can setan audio alert to warn you when the battery reaches a low-power condition, or you can change thefactory settings for the power button. Accessing Power Options Properties To access Power Opt...

Displaying the Power Meter icon By default, the Power Meter icon appears in the notification area, at the far right of the taskbar, displayingdifferent icons to indicate whether the computer is running on battery or external power. To remove the Power Meter icon from the notification area, follow th...

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 onbattery or external power. You can also set a power scheme that initiates st...

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: 1. Right-click the Power Meter icon in the notification area, and then click Adjust Power Properties ....

6 Processor performance controls CAUTION: To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on ahard, flat surface. Do not allow another hard surface, such as an ...

7 Batteries When a charged battery is in the computer and the computer is not plugged into external power, thecomputer runs on battery power. When the computer is plugged into external AC power, the computerruns on AC power. If the computer contains a charged battery and is running on external AC po...

Inserting or removing a battery NOTE: Batteries vary in appearance by model. To insert a battery: 1. Turn the computer upside down on a flat surface, with the battery bay away from you. 2. Insert the battery into the battery bay (1) and rotate it downward until it is seated (2) . The battery release...

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. ◦ Whe...

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 ControlPanel. Preferences set using Power Options do not affect lights. I...

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 ca...

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 isnot necessary to calibrate a new battery. Calibrate a battery under the following conditions: ● When battery charge displays seem inaccurate ● When you o...

Step 2: Discharging the battery Before you begin a full discharge, disable hibernation. To disable hibernation: 1. Select Start > Control Panel > Performance and Maintenance > Power Options > Hibernate tab. 2. Clear the Enable hibernation check box. 3. Click Apply . The computer must rem...

Step 3: Recharging the battery To recharge the battery: 1. Plug the computer into external power and maintain external power until the battery is fullyrecharged. When the battery is recharged, the battery light on the computer turns off. You can use the computer while the battery is recharging, but ...

Conserving battery power Using the battery conservation procedures and settings described in this section extends the time thata 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 wh...

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 totemperatures above 60 ˚ C (140 ˚ F). Replace the battery only with...

Index A AC adapter 4 B battery battery power vs. AC power 17 calibrating 23charging 19, 23conserving power 26disposing of 28inserting 18low-battery conditions 21monitoring charge 19recharging 25removing 18storing 27using 17 battery charge information 19battery light 2, 19, 21battery release latch 18...