I wanted to use my old Pavilion dv5176 as an extra storage machine and have made a recovery of Windows XP (and all updates) when it still was possible.
Now there is a well known problem. No sound from the microfon input. However, it's possible to record from the input, but no monitor sound. All other sound facilities and the loundspeaker works good.
I tried to uninstall the Conexant AMC Audio card and install it again, also installed new drivers from the HP support.
All settings seems to be ok.
Earlier I have managed to help friends with similar sound problems but this time it's hopeless. :(