I had a funky problem with one of my new MSI K8N Neo2 motherboard's onboard network adapters. All of a sudden it stopped working. I searched google, found the MSI forums and found that the adapter may have been failing because the OS had turning it off (into a power saving mode), and was unable to turn it back on, even after a cold boot. I needed to shutdown the computer, remove the power cord for 3+ seconds and then restart. This fixed the problem.
In the meantime I had been messing with the nVidia nForce3 system drivers in an attempt to get the network adapter working. Once the network was fixed, I went ahead and updated to the latest nVidia nForce 3 drivers - 5.10. I also found a thread that mentioned that the latest audio drivers from nVidia would work for the integrated sound. I had been using the RealTek drivers, but I did not like the mixer that came with it, so I tried installing the nVidia driver and it works fine. Note: I had to force the install of these drivers, by
I had been surprised to see that the nVidia network driver was installed on only one of the adapters. I had expected both adapters to use the nVidia driver, not so. One uses a RealTek driver installed with XP and the other uses the nVidia driver. So until you install the nVidia nForce3 network drivers you only have one network adapter. I looked in the motherboard manual and sure enough, they are two different network adapters. One by Marvell and the other by RealTek