HP Compaq Presario,Presario 1800-XL1 User Manual page 97

Caution: When you shut down your Notebook, the power turns off.
However, some electrical currents may still be flowing through the
Notebook. To completely disconnect power from the Notebook,
unplug the power and modem cables from the wall outlets and
remove the battery.
Caution: Do not use household cleaning solvents because they
will damage the finish on your Notebook.
Warning
Tip
Caution: Do not use liquids of any kind on the keyboard, as they
may permanently damage the keyboard.
Caution: Do not use a regular vacuum cleaner for cleaning the
keyboard because you may deposit normal household debris on
the surfaces rather than remove it.