No Network Connections

On Domain Controller, running Window Server 2003, somehow crashed last night. When I log in, (I’m the domain admin), I am not able to see the network connections. However, when I log in as the local admin, I am capable of see the connections.

When trying to contact the domain controller from a workstation computer, or from another server on the domain, the domain controller cannot be reached. It appears like there is no longer a domain.

Any help as to what this may be?