Figured it out after calling tech support. There was a lot of 'noise' on my line, but it appears to be gone now. Only thing I can think of that caused it was this old POS CRT monitor that I am using in place of my widescreen, which is now on the other side of the province in my new home. (long story)
I already disabled the onboard NIC before attempting to install the new one. I originally thought it was the onboard card that was dying, but that seems that's no longer the case.