HP EliteBook 725 G2 Notebook PC - Manual (Page 59)

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 does not turn on.
● The display does not turn on.
● The power lights are off.
To test the AC adapter:
NOTE: The following instructions apply to computers with user-replaceable batteries.
1. Shut down the computer.
2. Remove the battery on 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, the AC adapter is not functioning and should be replaced.
Contact support for information on obtaining a replacement AC power adapter.
Hybrid Graphics and AMD Dual Graphics (select models only)
Select computers are equipped with either the Hybrid Graphics feature or the AMD Dual Graphics
feature.
NOTE: To determine whether Hybrid Graphics or AMD Dual Graphics is installed on your computer,
see your notebook graphics processor configuration and software Help.
Both Hybrid Graphics and AMD Dual Graphics offer two modes for processing graphics:
● High Performance mode—Applications assigned to this mode run on the higher-performance
graphics processing unit (GPU) for optimal performance.
● Power Saving mode—Applications assigned to this mode run on the lower-performance GPU to
conserve battery power.
Using Hybrid Graphics (select models only)
The Hybrid Graphics feature allows an application to run in either High Performance mode or Power
Saving mode, based on the application’s graphics-processing demands. Typically, 3D and gaming
applications run on the higher-performance GPU, and applications with lightweight graphics-
processing demands run on the lower-performance GPU. You can change the mode an application
uses (High Performance or Power Saving) through the Hybrid Graphics control panel.
NOTE: Due to hardware limitations, some applications can be run in only one of the two modes.
For more information, see your Hybrid Graphics software Help.
ENWW Setting power options 49