Particularly if you are installing Hyper-V on an HP Proliant, be aware of the issue in KB 950792 before you start: When you try to enable, disable, or update Hyper-V technology, the process stops responding
This problem occurs when the following conditions are true:
• You enabled, disabled, or updated Hyper-V on a Hewlett-Packard (HP) server.
• The HP Network Configuration Utility was installed.
Hyper-V updates are distributed by Windows Update. To help prevent you from experiencing this problem, Windows Update will not present Hyper-V updates to computers that have the HP Network Configuration Utility installed. For more information about the prerequisites to install and to update Hyper-V on HP servers, visit the following Microsoft Web site: