The Windows VPS/Dedicated server does not have a DNS service running by default.

You can use the registrar's name servers and point the domain's A records (managing the DNS via the registrar account) to the server's IP like:

A Record: your_domain.com --> 123.123.123.123
A Record: www.your_domain.com --> 123.123.123.123

Alternately, a DNS service could be installed/enabled on the dedicated server. You can do this, or we can assist you with this.