Hi - I'm fairly new to cameras. I have recently purchased a D5100 with a friend. I was at my dads wedding on the weekend and we took some great shots. When Ioaded the photos up on my laptop from the SD card about a third of the photos are ruined. It's almost like on some of them that it's trying to load three photos into one. Some of them half the shot is missing and greyed out or it has "static" like lines through them. On the display they are perfectly fine. Some of the ones that it's happened to are our favourites or the ones we didn't take multiples of. All the photos where shot in NEF/NEF*. I've not had this problem ever before and the SD card is fairly new. Any ideas?