Computerman ate my pictures

It was a simple thing, really. My computer was running slowly, and I couldn't get it to accept i-Tunes. Got my computer back. All of my pictures are gone. Maybe 500 of them. Ireland: gone. London: gone. Disney: gone. Christmas: gone. Jack's Barb-B-Q in Woodbine, Georgia: gone (well, all except a vague sense of unease). I expressly told the dude to look out for my pictures, but, well, that's how it goes. I wasn't that upset. He's a pretty nice fellow, and I do get i-Tunes now. That's not what the rap dudes mean when they say, to "back that thing up", is it?