Hello, dear!
Sorry, I am late.
According to your description, you may not have entered the IP address when installing the operating system.
After the administrator password is configured, you need to configure an IP address. The IP address here needs to be configured as a static IP address.
The following link includes Install Windows Server 2012 R2, Install SQL Server 2014 Express SP2, and Install SMC2.0.
For more, see Install SMC2.0 on Windows Server 2012 R2.