run the command: dism /online /enable-feature /featurename:Microsoft-Hyper-V

to manage a hyper-v server with an mmc snap-in, the latest RSAT tools will need to be installed on a management workstation. as of right now the newest version is RSAT for windows 7 sp1. from windows features->RSAT, install the hyper-v tools snap-ins.

on the core server enable all the remote management features with sconfig and then you’ll be able to connect remotely via the hyper-v snap-in.