Hello Guys. I found the solve on a Nvidia forum. Its works perfect for me.
This solution was found in another forum. And it solved the problem for me. I am using Windows 7 Ultimate x64. And the constant network disconnects was getting bad, especially during steady downloading.
What you need is the nVidia Vista v15.25 (32bit or 64bit) motherboard driver.
64bit URL: NVIDIA DRIVERS 15.25 WHQL
32bit URL: NVIDIA DRIVERS 15.25 WHQL
I ran into a problem immediately when the driver installer did not display the Ethernet menu item.
I had to do the following to get this fix to work. Note that it applies to the Windows 7 64bit version:
1) Uninstall any Nvidia Ethernet drivers.
--the Windows 7 default ethernet drivers get installed in their place
--verify and note down the filename of the Network Adapter driver filename that Windows 7 uses.
2) Do the following:
--go to the location where the Nvidia installer unzipped the v15.25 files on your hardrive. Under the Ethernet folder, find the v15.25 Ethernet driver file "nvmfdx64.sys" (file version 18.104.22.16889) and rename it to the Windows 7 x64 default Ethernet driver filename "nvm62x64.sys".
--copy nvm62x64.sys to c:\windows\system32\drivers (archive the old default file first).