I found some drivers here for HP 550 notebook. The sound chip appears to be
AD1981HD. The trade name is SoundMax from Analog Devices. (This link should all
be one line pasted into your browser. My news server won't let me post the link
as a single long line.)
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=3765010&
prodTypeId=321957&prodSeriesId=3764998&swLang=8&taskId=135&swEnvOID=2095
There is a driver package for WinXP.
http://h20000.www2.hp.com/bizsuppor...cription.jsp?lang=en&cc=us&prodTypeId=321957&
prodSeriesId=3764998&prodNameId=3765010&swEnvOID=1093&swLang=8&mode=2&taskId=135&swItem=ob-62965-1
ftp://ftp.hp.com/pub/softpaq/sp39001-39500/sp39428.exe
You should be seeing the same kind of control panel, that I have
on my computer here. I have a different CODEC (AD1988B), but
the design of the CODEC follows a common theme. There are some
input ports, that can be looped to the main Line-Out. And
that should allow a microphone to be heard in the speakers.
(What I cannot tell, from a diagram like this, is how they decided to
connect those interfaces, to jacks on your computer.)
http://www.analog.com/static/imported-files/data_sheets/AD1981HD.pdf
I think you should have the same capability as I have.
Do you have an icon in the tray, for SoundMax ? This is the
icon I see in my tray, after the driver is installed.
http://www.intel.com/support/motherboards/desktop/sb/img/soundmaxicon.jpg
In this example, the Microphone has a red dot below the slider in
the Playback section. You need to click that, to "unmute" the
path. Clicking the red dot, should result in microphone sounds
being played through whatever you have for a speaker.
http://www.activewin.com/reviews/hardware/processors/intel/p428ghz/images/audiocomsmall.jpg
Paul
.
Dear Paul: