I agree with you - It should work. But the Notebook system software is pretty picky, it seems. There have been reports on these forums of it refusing to install before, although I thought that was with versions of Windows that weren't supported for the Inspiron they had, which obviously isn't the case with you. I'd or email Dell and see what they have to say about it. I really think they need a way to "force" the install - if they come up with one for you, make sure to post it on the boards.