Keypad locked?

try a power reset.  Remove battery, and power adapter cord from the system, hold the power button to drain all electricity.  If that doesn't work try booting to the drivers cd or boot to safemode and make sure it isn't a windows or software problem within normal mode.  You could also try reseating the keyboard and touchpad connections with the motherboard.  In the resources tab above under the users guide link you can find detailed instructions to do this.