Is the project director in Taiwan? If so I probably can ask some friend to send some inquiry.
OK, I just realized you answered in a separate thread. I wanted to delete the following but think they may have some values to someone so I leave it here[/edit]
It's not from within an OS. When booting, you enter the BIOS setup. Based on the maker of the BIOS, many options should be available. Since most of the BIOS were made by AMI, who took over Phoenix I think, the options should be very similar.
For example, see if the top menu has something called "Advanced". When you get to that menu, there may be an entry called "VT-d Support". The default is probable 'Disabled". See if you can change it to "Enabled", save. Then reboot to BIOS again and see if the value is indeed saved.
The reason I was asking is because I doubt anyone will use 2 E5 CPUs with 16 cores and 32 threads total, with 128 GB of ram, to run Windows 7. Most would want to use a bare metal hypervisor such as VMware ESXi. With that much of threads and memory, there's a chance to allocate (pass-through) some system devices to a certain VM (such as a SAS card or a HBA card) for direct access. Without VT-d the direct device pass-through is not possible. Of course, if your E5 2670 is SR0H8 instead of SR0KX then your CPU may not support VT-d.