I can see all my pictures in the camera but when I insert sd card into my LAPTOP, it shows empty. I used to access my pictures in my laptop but since a week i can not see my pictures.
In the property window, it shows .8GB of 3 GB has been used.

Install Recuva or pc files inspector, see if they can see your files...it may be showing thumbnails, but the actual data for the pictures may have been corrupted. Worth tryin to recover them and then reformat the sd card if it will.
