I have a very strange (in my opinion) problem with sound.
The story so far: I've had Windows 7 Professional installed on my laptop for quite some time without problems. Now I installed Ubuntu 12.10 Desktop next to it and it works very well too.
But after installing and playing around with Ubuntu for a while (I've been using Gnome and Fluxbox as WM) and booting Windows again, I don't get sound on the external speakers.
It worked before, it works with internal speakers and it recognizes the speakers being plugged in. It works on Linux though.
I know this is more of a windows problem, but I already uninstalled and reinstalled the sound drivers and have no idea how to solve this. Maybe someone here knows the Linux driver or Gnome system tools well enough to give me a hint.