Hopefully this is an easy problem.
Here is what works successfully... From a command prompt I can ping servername and it resolves with IP 192.168.3.7.
I can also ping 192.168.3.7 and I get full replies...
However from a browser window or (Windows, Run), I can only go to \\servername.
If I type in \\192.168.3.7 it fails to connect.