I have acquired a slightly used D620 however the touch-pad and track stick do not seem to be working at all. Neither of the buttons on the touch pad work either. My external USB mouse is functioning perfectly. I have reinstalled drivers from Dell Support, tried drivers from other models, and reinstalled Windows when I noticed the hardware manager wasn't even detecting the touch-pad at all. I also tried to change around the touch-pad options in the BIOS settings but nothing has led to success. My next step is to remove and reconnect the touch-pad and track stick/ keyboard. Anyone have any ideas? Thanks a bunch, in advance, for your help.