K9N2GM loading sound drivers problem

Question

Originally machine was loaded with XP SP2 and factory supplied drivers on CD (XP) All was sweet. SP3 was installed - still OK.
Windoze went slow so I have started from scratch and installed XP Home SP3 this time from original as always CD from M$.
All went sweet. Tried loading drivers from original CD and HD audio driver was complaining about SP3. But loaded driver anyway. No sound.
D/loaded drivers form MSI web page, went messy with previous drivers. Started again.
Loaded Win XP SP3 and loaded firstly system drivers, all went sweet. Loaded NVIDIA_MCP72_System_XP_MB.zip
Tried to load realtek_hd_all_mb.zip (d/loaded from Australian MSI web page) didn't look good, after restart no sound and in device manages Audio Device HD on Audio Bus still showing me that drivers are loaded.
Help! TIA

Answer 1

Hmmm... tried... didn't worked.
But... after installing original WinXP SP2 with original M/M drivers, no glitch in installation but sound doesn't work on SP2 either.
I have the same mobo on other computer and just connected two hdd's just to check s/ware config and... on both Sp2 and SP3 sound is working on my mobo.
Friend, who asked me to fix his machine because was slow, telling me that sound was always working on it.
It's there a possibility that his speakers (5.1) connected before to 3 outputs could cause the problem and on one (2 speakers on one green socket) the mobo would be confused?
I would say that very unlikely. Also transporting the machine in a car could damage something but when I move sliders of volume on Realtek software I can here scratchy sound every time I move the slider.
When I connect or disconnect the cable from the speakers, s/ware showing it immediately.
Any other thoughts???