Sony PCG-FX390K Primary User Manual page 131

Troubleshooting the Mouse and Touchpad
If you cannot turn off your notebook as described in the step above, press
Ctrl+Alt+Delete simultaneously and click Shut Down on the Windows®
Security screen to restart the notebook.
If you cannot restart your notebook as described in the step above, press and
hold the power button for more than four seconds to turn off the notebook.
If the pointer does not move while playing a disc, press Ctrl+Alt+Delete
simultaneously to stop playback and restart the notebook.
If this procedure does not work, ensure that another mouse was not installed.
You may need to use your supplied Driver Recovery CD(s) to reinstall the
touchpad drivers. See "To use the Driver Recovery CD(s)" for more
information.
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