HP Compaq Presario,Presario 700 User Manual page 81

You should clean the
keyboard periodically to rid it
of dust, lint, and any other
foreign particles that may
become trapped beneath the
keys. Use a can of
compressed air with a straw
extension attached to blow air
in and around the keys.
Cleaning the keyboard prevents keys from sticking and jamming.
It also makes typing a more pleasant experience.
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CAUTION: Do not use liquids of any kind on the keyboard, because
they may permanently damage your keyboard.
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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.
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Foam swabs or cosmetic applicators are preferred to cotton
Tip
swabs because cotton can add rather than remove lint.
Mobile Internet PC User's Guide
Presario 700 Series
Preventive Maintenance
7–3