Install Microsoft Hyper-V on a HP Proliant Server

After installing Hyper-V on a Windows Server 2008, i get an unclear error message when trying to start a virtual server.

The problem was coming from my server's BIOS configuration. Here the two parameters to set :

Advanced Options > Processor Options > Intel (R) Virtualization Technology => Enabled
Advanced Options > Processor Options > No-Execute Memory Protection => Enabled

Press F10 to save your changes and restart the server.