I replaced my older AMD MB and CPU with GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX + SB950 SATA 6Gb/s USB 3.0 ATX AMD Motherboard and FX 8320. All went well except I can't connect to internet now. The LED lights on the back panel show the port is active. Diagnostic turns up nothing. All I did was unplug, gut old parts, replace new and plug back in. Everything works, but internet. Is there something simple I'm just overlooking?