Nikon digital cameras have taken up a special position in the market of cameras. It is being highly preferred by the users just because of its unseen and unique features. Every model of Nikon camera is made especially for professional photography. If you are a professional photographer, and have a Nikon Digital camera then you may know that its capabilities, how perfect they are for storing huge numbers of photos in its SD card which supports NEF raw file format. NEF stands for Nikon Electronic Format pictures which are clear, crystal like and high quality images which is enough for preserving your moments at a second. However these NEF files photos are inaccessible and may get lost in some critical situations at some time. The reason for such losses are unavoidable and which initially happens when you are accessing stored images and the same time you may lead to error pop ups which looks like: