MYBOOKLIVE network card no longer works

Bought this drive for my daughter for Christmas and it worked for a month, now it is no longer connecting. Front light is green, network conector steady yellow. Tried reseting, with a few green network flashes, reset router, but not mac address is being found by DHCP thus not connecting, what should I try?   Being it’s 3 months old (pst 30days) do I just file it in garbage and stick to my Lacie?  Any last ditch ideas?  

The MBL has a 2-year warranty, not 30 days…

try a different network cable

tried thanks

Well that will help, read 30 somewhere,  will go back and check…   Thanks