I'd be willing to bet the bottom cover isn't clipped in near the trackpad. I know on the [[Topic:Acer Chromebook C732|Acer C732 laptops]] if the bottom cover isn't clipped in all the way then the trackpad won't work as expected. Make sure the bottom cover is clipped in, otherwise, I'd open the laptop back up and make sure that the screws holding the trackpad in place aren't loose.