My DVD drive is no longer visible under device manager or my computer where it should be listed it says "GENERIC STORAGE DEVICE USB Device" and I don't even have any usb devices plugged in.I also know it still works and is connected because it shows up in the Bios and can read boot disc. I've also tried uninstalling the drivers and reinstalling but it just installs the USB drivers again.
Partially fixed it: just had to delete a registry entry called NOIDE I still have a random generic storage device with absolutely nothing on it that's being detected for some reason though
More about :dvd drive dissapeared replaced removable storage drive
Yeah, I've seen this also, and I don't know why. My theory is that usb slots come in pairs, and when one is used another comes active. But this doesn't really hold water because it seems to happen only sometimes, and I haven't been able to find the pattern.