Ive been having problems with my onboard network card, the lights will not light up when the ethernet cable is plugged in. I updated the drivers to the newest ones (realtek family GBE drivers) and it still didnt work. It is enabled in bios and is showing as fully functional in device manager.
So I went out and bought a NIC card and plugged it in. Windows recognizes it is there and installed the realtek family GBE driver. It will not light up or connect to the internet.
The ethernet cable is fine (its been tested with my laptop) so its not a problem with the network.
Here are my system specs:
Intel i5 750 (OC to 3.5ghz), P7P55LX mobo, GTX 275OC, 6GB ram and 2.5TB