Compaq Presario,Presario 1211 Supplementary Manual page 25

When a charged battery is in
your Notebook, you can simply
unplug it from AC power. Your
Notebook automatically
switches to battery power
Hibernation is a state of
no-power consumption.
When your Notebook enters
this mode, the contents of
the memory are saved to
the hard disk and your
Notebook is powered off.
You should only press and hold
down the Power button to
shut down your Notebook if it
is locked up or not responding.
Compaq does not recommend
that you turn off your Notebook
using this method under
normal circumstances. To turn
off your Notebook properly,
refer to the procedure above.
When you're not on the go, you'll want to use your
Notebook's AC adapter to supply power. This ensures that the
battery is always charged.
When your Notebook does not have a charged battery, you
should save your work and turn off your Notebook before
unplugging it from the AC power supply.
To turn on your Notebook,
press the Power button,
which is located at the top
right of the keyboard.
To turn off your Notebook
properly, complete the
following steps:
1. Save your work and exit all open programs.
2. Click the Start button, then click Shut Down, and select
the Shut down option.
3. Click the OK button. After a few seconds, your Notebook
will turn off.
When your Notebook is on, pressing the Power
places your Notebook in Hibernation mode. The settings for
the Power button are as follows:
• Press and release once to enter Hibernation mode
• Press and hold down (about four seconds) to shut down
your Notebook
button