A: Something's wrong with my computer. B: Exactly what? A: All I get is a black screen. B: What's the matter? A: I think I know, because this happened before. B: What happened before? A: My hard drive crashed. B: Oh, no. That's bad news. A: It sure is, but I'm going to call HP first, just to make sure. B: Will you lose all your files? A: No, I always back up my files. B: You're smart.