>- check that the sound device has not been disabled in the system BIOS
>- download the appropriate driver(s) from hp.com

When we go in MSN, in Tools and Audio settings, the sound is working good. However, with a MSN conversation with someone else, the sound is not transmitted. Then, in HP Muvee Producer, the video is working but it does not recognize that there is a sound device.

It seems something was not fully installed.