I recently reformatted Windows XP on my computer. I have the same headphones and hardware as before the reinstall, but my audio is significantly lower than is was previous to the reformat. The audio previous could go to a point where it was TOO loud and could not have the headphones on at full volume. This really sucks, any ideas are helpful! As far as I know there is no sound card in my computer, and it is running Realtek HD Audio Drivers.