Since it sounds like software.
by R. Proffitt - 2/19/12 8:50 AM
In Reply to: Samsung Notebook Keyboard and Touchpad Not Working. by Drancron
Did you use System Restore (SR) to the day before the problem?
SR does not touch our files so this is the first aid for such an issue. Beyond that, it gets technical, deep and can be upsetting.