HP 15-d099nr TouchSmart Notebook PC - Manual (Page 26)

5 Managing power
Your computer can operate on either battery power or external power. When the computer is only
running on battery power and an AC power source is not available to charge the battery, it is
important to monitor and conserve the battery charge.
Shutting down the computer
CAUTION: Unsaved information is lost when the computer is shut down.
The shutdown 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:
● When you need to replace the battery or to access components inside the computer
● When you are connecting an external hardware device that does not connect to a USB port
● When the computer will be unused and disconnected from external power for an extended
period
To shut down the computer, follow these steps:
NOTE: If the computer is in the Suspend state or in Hibernation, you must first exit Suspend or
Hibernation before shutdown is possible.
1. Save your work and close all open programs.
2. Click the System menu icon at the far right of the top panel, and then click Shut Down > Shut
Down.
If the computer is unresponsive and you are unable to use the preceding shutdown procedure, try the
following emergency procedures in the sequence provided:
● Press and hold the power button for at least 5 seconds.
● Disconnect the computer from external power, and then remove the battery if the computer
includes a user-replaceable battery.
Setting power options
Using power-saving states
The computer has two power-saving states enabled at the factory: Suspend and Hibernation.
When Suspend is initiated, the power lights blink and the screen clears. Your work is saved to
memory, letting you exit the Suspend state faster than exiting Hibernation. If the computer is in the
Suspend state for an extended period or if the battery reaches a critical battery level while in the
Suspend state, the computer initiates Hibernation.
When Hibernation is initiated, your work is saved to a hibernation file on the hard drive and the
computer turns off.
18 Chapter 5 Managing power