I have tried uninstalling and reinstalling all the software and it wants me to format. I have about 400 gigs of stuff and don't want to lose it. This has movies, music, books, and photos of my late husband's art that I don't have anywhere else. Is there a way to get around the need to format in order to get this drive recognized? It isn't showing up in my disk manager at all. Or should I just go back to Windows Vista? Any help would be greatly appreciated.