When I first installed my new DVD Burner, I was able to burn just fine. At first I burned using CD Burner XP Pro, mostly because of its audio CD features. It worked perfectly for awhile, but now NO burning program I use is able to burn to any of my media. It just happened all of the sudden. I tried to burn a data disc containing some simple SNES ROMS using ImgBurn, but I get an error saying Device not ready (medium not present). I've tried Fireburner, Nero, and others, but nothing recognizes my Hypermedia CD-Rs or my Memorex DVD+Rs. Windows cannot read it either when I browse to my E: (my DVD drive) in Windows Explorer. I updated the firmware and everything. I don't know what else to do. I don't want to go out and buy new media to try, since I know what I already have works great. But now I don't know what to do. Does anyone know what's going on?