HP Compaq Presario,Presario 700 User Manual page 13

During an electrical storm, you should take the following
precautions to protect your Notebook from damage. You should
immediately disconnect your Notebook from the power source.
J
After your Notebook is safely disconnected from AC power,
Tip
you can run your Notebook on battery power.
If you are not using a surge protector, unplug all power cords
from the wall outlets.
Disconnect your Notebook from the wall outlets.
Turn off the power button on all surge protectors.
If a telephone line from your Notebook is plugged directly
into the wall jack (without going through a surge protector),
unplug the line from the wall jack.
Mobile Internet PC User's Guide
Presario 700 Series
Introduction
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