Display; Touchpad - HP Pavilion DV4000 Hardware And Software Manual

Notebook Care

Display

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CAUTION: Never spray water, cleaning fluids, or chemicals on
the screen. Doing so can permanently damage your notebook.
To remove smudges and lint, frequently clean your display with
a soft, damp, lint-free cloth. If the screen requires additional
cleaning, use an antistatic screen cleaner or premoistened
antistatic wipes.

TouchPad

Grease and dirt on the TouchPad can cause your cursor to
jump around on the display screen. To avoid this, wash hands
frequently when using the notebook and clean the TouchPad with
a damp cloth.
15–4 Hardware and Software Guide