Hi.
Thank you so much to NeverSimple for your answer: https://forum.pfsense.org/index.php?topic=65355.msg365028#msg365028
I have a Gigabyte C1037UN with 2 onboard ethernet cards that not working properly with pfsense 2.1.4-amd64
I followed up instructions exactly as NeverSimple posted and now pfsense is working perfectly.
Thanks again!!!