Msi gf615m-p33 v2 + Amd Athlon x2 250 system error

Hello everyone,

I am new here. I’ve just downloaded and installed TrueNas but didn’t get IP address for web interface. The error is: “truenas the web interface could not be accessed please check network configuration.” I know my lan port works because I checked it before installing TrueNas.

My system is:
Msi gf615m-p33 v2
Amd Athlon x2 250
8Gb DDR3 ram
60GB SSD for boot and some other disks.

Which steps should I follow to fix my problem? I don’t have many experience about Linux but I am open to learn.