HP Compaq Presario,Presario 1800-XL1 User Manual page 126

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Symptom Problem
Keyboard Program in use has
commands stopped responding
or keystrokes to commands.
are not
recognized by
your Notebook.
Fn+Num Lk or The internal keyboard
Shift+Num Lk NumLock is disabled
does not turn when an external
the internal PS/2 keyboard or
NumLock on. keypad is present.
When typing, The NumLock feature
some of the is turned on.
letter keys return
numbers to
the screen.
Cursor jumps to TouchPad needs to be
a different cleaned.
location
while typing.
Cursor does TouchPad needs to
not respond. be cleaned.
Keyboard and TouchPad
Solution
Turn off your Notebook using
the TouchPad.
1. On the taskbar, click the
Start button.
2. Click Shut Down...
3. Select the Shut down
option, and click OK.
4. After the shutdown is
complete, restart
your Notebook.
If your Notebook does not
shut down, press and hold
down the Power
until your Notebook turns off.
Use keypad on the external
keyboard, or unplug the
external keyboard to use
internal keypad feature.
Press the Fn or Shift key while
pressing the Num Lk key to
turn Num Lock off.
Wipe the TouchPad with a
damp cloth and wipe it dry.
Wipe the TouchPad with a
damp cloth and wipe it dry.
button