Updated: April 17, 2012
Applies To: Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, Windows Server 2003 with SP2, Windows Server 2003 R2, Windows Server 2008 R2, Windows Server 2012, Windows Server 2003 with SP1, Windows 8
Deletes a service subkey from the registry. If the service is running or if another process has an open handle to the service, the service is marked for deletion.
For examples of how to use this command, see Examples.
sc [<ServerName>] delete [<ServiceName>]
|<ServerName>||Specifies the name of the remote server on which the service is located. The name must use the Universal Naming Convention (UNC) format (for example, \\myserver). To run SC.exe locally, omit this parameter.|
|<ServiceName>||Specifies the service name returned by the getkeyname operation.|
|?||Displays help at the command prompt.|
Use Add or Remove Programs on Control Panel to delete DHCP, DNS, or any other built-in operating system services. Note that Add or Remove Programs will not only remove the registry subkey for the service, but it will also uninstall the service and delete any shortcuts to it.
To delete the service subkey NewServ from the registry on the local computer, type:
sc delete newserv
Source : Sc delete