I am working on a PC with Windows 7. When I pull up an image in the Develop Module it is extremely posterized, almost pixelated. It almost looks like a what I would call a "heat map" with all the different gradients. It appears fine in the Library Module and also under Details. However, when I want to split the screen and look at before/after images, the before image is fine and the after image is just various gradients of color. I have reset, closed down the program, visited other forums, and researched for hours. I have stumped the experts at my university campus. Any suggestions? Images are from a Nikon DC3300. I have changed no settings. I have reset multiple times. Nothing is working.