System Blue Network Interface Question

[chevyman142000]

Hello everyone, 

I just got my system blue built last week and powered up. It has been running fine as far as I can tell. I was just looking at my network switch and noticed that the port it is plugged into is only running at 10mb half duplex and is throwing some CRC and late collision errors on that port. I tested the cable run between the switch and the detector and it checked out. Does it sound like I may have done a bad solder job on the nic?

Thanks!
Jeff