Yesterday I turned on my Macbook and the keyboard and trackpad are no longer deciding to work. I am not sure if something went wrong during the 10.5.7 update or something, but neither will respond. The caps lock light on the keyboard won't turn on, and the trackpad accepts no gestures. I also hooked up an external USB mouse and that didn't work either. Any guidance in getting this fixed/diagnosing the problem would be great Thanks!