Win 7 NIC problems  

I have a gigabyte motherboard that has a Realtek NIC. I bought Win 7 home premium and installed it. The NIC shows up in the device manager as having problems. I tried to reinstall the driver and it starts out good but at the end it says that there is a problem loading driver.
I tried a couple different cards that had intel chips and the same problem. Driver starts to load but I get the same error at the end.
Does anyone have info on this? Any help is appreciated

The board is G41M-ES2L and it has a Realtek RTL8168(P)/8111C(P) PCI-E Gigabit Ethernet NIC.
As I mentioned earlier I did try a couple different cards that had intel chips and I got the same result. I did disable the on board NIC before trying the other cards.