Could you please elaborate the issue that you are facing with Lightroom?
Are you not able to see those contrast, white sliders in the basic panel of Lightroom?
Which version of Lightroom?
Which operating system : windows or mac?
i have a Mac book & lightroom five and i am seeing the white sliders on the panel but when i move them nothing happens unless I'm using the brush. its very hard to explain and i know that when i had a issue with lightroom before someone took access to my mac and fixed it.
Attaching a screen shot (via the website) might be helpful for us to see what Develop settings you are trying to use.