HP ENVY dv4-5213cl Notebook PC - Manual (Page 52)

To test the AC adapter:
1. Shut down the computer.
2. Remove the battery from the computer.
3. Connect the AC adapter to the computer, and then plug it into an AC outlet.
4. Turn on the computer.
● If the power lights turn on, the AC adapter is working properly.
● If the power lights remain off, check the connection from the AC adapter to the computer
and the connection from the AC adapter to the AC outlet to make sure the connections are
secure.
● If the connections are secure and the power lights remain off, the AC adapter is not
functioning and should be replaced.
Contact customer support for information on obtaining a replacement AC power adapter.
HP CoolSense
HP CoolSense automatically detects when the computer is not in a stationary position and
adjusts performance and fan settings to keep the surface temperature of your computer at the
optimum level of comfort.
When HP CoolSense is off, the position of the computer is not detected and the performance and fan
options remain at the factory setting. As a result, the surface temperature of the computer may be
higher than it would be with HP CoolSense on.
To turn CoolSense off or on, follow these steps:
▲ From the Start screen, type cool, select Settings, and then select HP CoolSense.
Shutting down (turning off) the computer
CAUTION: Unsaved information is lost when the computer shuts down. Be sure to save your work
before shutting down the computer.
The Shut down 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 access components inside the computer
● When you are connecting an external hardware device that does not connect to a USB or video
port
● When the computer will be unused and disconnected from external power for an extended
period
Although you can turn off the computer with the power button, the recommended procedure is to use
the Windows Shut down command:
42 Chapter 6 Managing power