I uploaded my images but they are not saved in any folder. They have not been rendered. I have the ! in the corner of my thumbnails. But I do have high res digital negatives. They aren't retrievable. What is the best option? I shot over my memory card. It doesn't make sense that I would have these digital negatives and no folder on my harddrive with actual files. Can anyone shed any light on the matter?
That means that they are not in the location recorded in the catalog, that is the location you imported them to. If you used the file system to move then just search and locate the missing files then use the instructions to attach them Adobe Photoshop Lightroom Help | Locate missing photos
When you imported them where did you COPY/MOVE the images to. In the Import dialog window you have to specify a location to Copy or Move the images to off the cameras memory card. Look at that location. Could be you Copied or Moved them to an External drive and now you have disconnected that external drive.