If you try to install Windows with ROK licence (Reseller Option Kit) on top of a hypervisor (Virtual scenaario), after loading, the installatios shows you this error:
This error is because Windows Server does not recognize the "hardware" as a Proliant server.
To solve this problem:
After creating a VM, with the VM powered off, go to Edit Settings / Options / General and select "Configuration Parameters".
Add a new row with this name smbios.reflecthost and with this value TRUE and try again . ;)