I have a four year old HP Media Center m7060n with 3gb of memory.  The only working sound jack on my system is the front green headphone jack.  I have a Logitech 5.1 speaker system that worked fine until the install.  There are two video/sound related yellow triangles in the Hardware list:

Conexant 23880 Video Capture (Blackbird NTSC dual input)

Conexant 2388x MPEG Encoder (Dual-input)

The  High Definition Audio Controller and High Definition Audio Device both appear to be working properly.

I have installed every driver that I can find that might help.

Logitech says that my speaker model is compatible with Win 7.

HP doesn't even list Win 7 as an OS when I look for updates ... only XP and Vista.  The updates for Vista have nothing to do with sound.

Windows Updater gave me several new drivers including ones for the two Conexant devices.

So far nothing has worked.  I am using a workaround by plugging the green plug from the speakers into the front jack, but that only gives me 2.0 sound not 5.1.

Does anyone have any other suggestions?

Thanks,

Christie