Yeah, my laptop is a Dell Inspiron 15R as well, it is touch enabled and a week old. However, I can't figure out how my touch screen got disabled, how do I re-enable this feature again? Thank you.
As far as your laptop being touch enabled, I'd say one way to find out is going into your hidden device bar, and look for a keyboard. If it has this onscreen keyboard, then your computer is more than likely to be a touch screen.