I wanted to share the solution to my problem, which might work on some other systems.
After installing Windows 7 (32bit, clean install) on my Toshiba Satellite U205, I had no sound outputting thru the speakers and the front jack, despite the volume indicator showing some activity when playing a sound. The drivers
used by my audio chip are the SoundMax.
After digging the web and trying about 10 different drivers, I came across a small utility provided by Toshiba to un-mute the sound card after a clean Vista install. Although it was not meant to be used with Windows 7, I installed it and there you go, the sound came back!
The link for the utility is: http://cdgenp01.csd.toshiba.com/cont...off_25847B.exe
For information, I did not have to run the patch in compatibility mode. Please, reply to this post if the utility solved your sound problem on a different system than mine.