System runs Ubuntu and Windows XP SP3. Sound is fine under Ubuntu but\ndoes not work at all under Windows. I have tried loading and reloading\nWindows drivers to no avail. At present, Device Manger shows:\nATI Function Driver for HD Audio - ATI791A\nAudio Codecs\nAudio Device on HD Audio Bus\netc.\n\nIf I go to Control Panel, Sounds and Audio Devices: Properties, I get\nATI HD Audio rear output. If I look at the driver details for this I\nsee ATIHDMI.sys which suggests to me a HDMI connection rather than the\nstereo speakers I am using.\n\nCan anyone help with this, please?