worked when it was Vista? I upgraded my laptop to Windows 7 through a free installation disc from Toshiba (my laptop's brand), and now the sound doesn't work when I hook up my laptop to my TV through an HDMI cable. It worked when my OS was still Vista. How do I get the sound to work again on my TV with Windows 7 on my computer? I've looked for audio driver updates and there isn't any so I was wondering if there is something I click in the options, or something around that.