HP Pavilion Dv5 2100 Entertainment Notebook Pc Series Manual

5.In the Device Manager window, click Action, and then click Scan for hardware changes.
Windows scans your system for installed hardware and installs default drivers for any devices
requiring drivers.
NOTE:If you are prompted to restart the computer, save all open files, and then continue with
the restart.
6.Reopen Device Manager, if necessary, and then verify that the drivers are once again listed.
7.Try running your program again.
If uninstalling and reinstalling the device drivers does not correct the...

5 Power management
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...

Initiating and exiting Hibernation
The system is set at the factory to initiate Hibernation after 1,080 minutes (18 hours) of inactivity when
running on either battery power or external power, or when the battery reaches a critical battery level.
Power settings and timeouts can be changed using Power Options in Windows Control Panel.
To initiate Hibernation:
▲Click Start, click the arrow next to the Shut down button, and then click Hibernate.
To exit Hibernation:
▲Briefly press the power button.
The...

Selecting a different power plan
▲Click the battery meter icon in the notification area, and then select a power plan from the list.
– or –
Select Start > Control Panel > System and Security > Power Options, and then select a power
plan from the list.
Customizing power plans
1.Click the battery meter icon in the notification area and then click More power options.
– or –
Select Start > Control Panel > System and Security > Power Options.
2.Select a power plan, and then click Change plan settings....

When you connect the computer to external AC power, the following events occur:
●The battery begins to charge.
●If the computer is turned on, the battery meter icon in the notification area changes appearance.
When you disconnect external AC power, the following events occur:
●The computer switches to battery power.
●The display brightness is automatically decreased to save battery life. To increase display
brightness, press the f3 action key or reconnect the AC adapter.
Connecting the AC adapter...

Testing an AC adapter
Test the AC adapter if the computer exhibits any of the following symptoms when it is connected to AC
power:
●The computer will not turn on.
●The display does not turn on.
●The power lights are off.
To test the AC adapter:
1.Remove the battery from the computer.
2.Connect the AC adapter to the computer, and then plug it into an AC outlet.
3.Turn on the computer.
If the power lights turn on, the AC adapter is working properly.
Contact technical support for information on obtaining a...

Finding battery information in Help and Support
Help and Support provides the following tools and information about the battery:
●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 > Learn > Power Plans: Frequently Asked Questions.
Using Battery Check
Help and Support...

3.Rotate the battery into the battery bay until it is seated (2). The battery release latch automatically
locks the battery into place.
To remove the battery:
1.Turn the computer upside down on a flat surface.
2.Slide the battery release latch (1) to release the battery.
NOTE:The battery release latch automatically returns to its original position.
3.Pivot the battery (2) upward and remove it from the computer (3).
Charging a battery
WARNING!Do not charge the computer battery while you are onboard...

Charging may take longer if a battery is new, has been unused for 2 weeks or more, or is much warmer
or cooler than room temperature.
To prolong battery life and optimize the accuracy of battery charge displays, follow these
recommendations:
●If you are charging a new battery, charge it fully before turning on the computer.
●Charge the battery until the battery light turns white.
NOTE:If the computer is on while the battery is charging, the battery meter in the notification
area may show 100 percent...

The computer takes the following actions for a critical battery level:
●If Hibernation is enabled and the computer is on or in the Sleep state, the computer initiates
Hibernation.
●If Hibernation is disabled and the computer is on or in the Sleep state, the computer remains briefly
in the Sleep state, and then shuts down and loses any unsaved information.
50 Chapter 5   Power management ENWW