Running On External Ac Power; Troubleshooting Power Problems - HP Notebook User Manual

Running on external AC power

For information about connecting to AC power, refer to the
computer box.
The computer does not use battery power when the computer is connected to AC external power with
an approved AC adapter or an optional docking/expansion device.
WARNING!
a replacement AC adapter provided by HP, or a compatible AC adapter purchased from HP.
Connect the computer to external AC power under any of the following conditions:
WARNING!
When charging or calibrating a battery
●
When installing or modifying system software
●
When writing information to a disc (select models only)
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When running Disk Defragmenter on computers with internal hard drives
●
When performing a backup or recovery
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When you connect the computer to external AC power:
The battery begins to charge.
●
The screen brightness increases.
●
The power meter icon on the Windows desktop changes appearance.
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When you disconnect external AC power, the following events occur:
The computer switches to battery power.
●
The screen brightness automatically decreases to save battery life.
●
The power meter icon on the Windows desktop changes appearance.
●

Troubleshooting power problems

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:
1. Shut down the computer.
2. Connect the AC adapter to the computer, and then plug it into an AC outlet.
3. Turn on the computer.
52 Chapter 6 Managing power
To reduce potential safety issues, use only the AC adapter provided with the computer,
Do not charge the computer battery while you are onboard aircraft.
Setup Instructions
poster provided in the