Thanks for the information. I will try it out today.
I lost sound on EVERYTHING except the headphone jack,
no windows startup sound, no Quicken sound, you-tube, media center, etc.
I am just about certain it started immediately after upgrading to SP2. (I will try restoring to SP1 just to be sure).
According to a scan, I did have back-level drivers Realtek High Definition Audio and ATI HDMI
(also a Realtek driver) .
Some others busted by maintenance, but thats another story .......
I updated both sound drivers, and still no sound.
I WAS wondering it some configuration item was causing it,
but there are a TON of settings to play with. and nothing I tried has helpd at all.
I can't believe Microsoft sends out so much maintenance that breaks stuff ........