HP Pavilion Dv1700 Notebook Pc Series Manual

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Hardware and Software Guide 3–17
Processor Performance Controls 
(Select
 Models Only)
Ä
CAUTION: To prevent overheating, do not obstruct vents. Use the 
computer only on a hard flat surface. Do not allow another hard 
surface, such as a printer, or a soft surface, such as pillows, thick rugs, 
or clothing, to block the airflow.
✎In some cases, a computer may operate at a higher speed on 
external power than on battery power. If the battery pack is the 
sole source of power and the battery power...

3–18 Hardware and Software Guide
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After a power scheme has been set, no other intervention is 
required to control the performance of your computer processor. 
The following table describes the processor performance on 
external and battery power for the available power schemes.
Power Scheme
Processor Performance 
While on External Power Processor Performance 
While on Battery Power 
Home/Office DeskAlways runs at the highest 
performance state.Performance state is 
determined based on 
CPU...

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Hardware and Software Guide 3–19
Battery Pack
ÅWARNING: To reduce potential safety issues, only the AC adapter 
provided with the computer, a replacement AC adapter provided by HP, 
or a compatible battery pack purchased as an accessory from HP 
should be used with the computer.
Inserting or Removing a Battery Pack
Inserting a Battery Pack
Although battery packs vary by model, the insertion procedure is 
the same for all models.
To insert a battery pack:
1. Turn the computer upside down on a flat...

3–20 Hardware and Software Guide
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Replacing a Battery Pack
Ä
CAUTION: To prevent loss of work when removing a battery pack that 
is the only power source, initiate hibernation or turn off the computer 
before removing the battery pack.
Removing a Battery Pack
Although battery packs vary by model, the removal procedure is 
the same for all models.
To remove a battery pack:
1. Turn the computer upside down with the battery bay 
facing
 you.
2. Slide the battery release latch 1 to release the battery...

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Hardware and Software Guide 3–21
Charging a Battery Pack
The battery pack charges when it is inserted into the computer 
and the computer is connected to external power. External power 
can be supplied through the following:
■AC adapter
■Optional expansion product 
■Optional power adapter
ÅWARNING: To reduce potential safety issues, only the AC adapter 
provided with the computer, a replacement AC adapter provided by HP, 
or a compatible battery pack purchased as an accessory from HP 
should be...

3–22 Hardware and Software Guide
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A battery pack inserted in the computer charges whether the 
computer is off or in use, but the battery pack charges faster while 
the computer is off. Charging may be delayed if a battery pack is 
new, has been unused for 2 weeks or more, or is much warmer or 
cooler than room temperature. 
The battery light displays charge status:
■On: the battery pack is charging.
■Blinking: the battery pack has reached a low-battery 
condition and is not charging.
■Off: the...

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Hardware and Software Guide 3–23
Displaying Charge Reports
To display battery charge information on the screen in Windows, 
use the Windows Power Meter feature described later in this 
section.
To access the Windows Power Meter display in Windows:
■Select Start > Control Panel > Performance and 
Maintenance > Power Options > Power Meter tab. 
– or –
■Select the Power Meter icon, which is displayed by default 
in the notification area, at the far right of the taskbar. 
To display the Power Meter...

3–24 Hardware and Software Guide
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Managing Low-Battery Conditions
This section describes default low-battery condition alerts and 
system responses. The default battery light responses cannot be 
changed. To change other responses, select Start > Control 
Panel
 > Performance and Maintenance > Power Options, and 
then follow the instructions on the screen. 
Identifying Low-Battery Conditions
When a battery pack that is the only power source for the 
computer reaches a low-battery condition, a text...

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Hardware and Software Guide 3–25
Resolving Low-Battery Conditions
ÄCAUTION: 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 are turned off. 
To resolve a low-battery condition:
■If external power is available, connect the computer to the 
external power source.
■If a charged battery pack is available, shut down the computer 
or initiate hibernation, insert the charged...

3–26 Hardware and Software Guide
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When to Calibrate
Even if a battery pack is heavily used, calibration should be 
necessary only once a month. You do not have to calibrate a new 
battery pack. 
Calibration does not usually increase battery run time, but it can 
increase the accuracy of battery charge displays, especially under 
the following conditions:
■When the battery pack has been unused for one month 
or
 more.
■When you notice a significant change in battery run time.
■When the battery...