I took pictures at a family wedding with a Cannon Rebel Camera. They came out great and I even used on for me wall paper. Then I started having problems with the computer so I copied the pictures to an external hard drive and had the computer reformatted. Once it was up and running, I copied the pictures back to the hard drive and even though they are in the same folder, same size, some will open up large and can be used as a wall paper and some only open in a thumbnail size and if I enlarge it, it gets blurry. Anyone know How I can change the attributes back so when I double click on it, it opens full screen like some of the others? P.S. I tried opening it with infrview, internet explorer, microsoft picture viewer, etc....

I am running Windows XP home