Q: No solution listed for 27" iMac running 2.7 GHz Intel Core i5

I have a 27" iMac, Mid 2011.

Model Identifier iMac12,2

The processor is a 2.7 GHz Intel Core i5.

I am running OS X Lion 10.7.3 (11D50)

Boot ROM Version is IM121.0047.B1F

SMC Version (system) is 1.72f2

I have installed Parallels Desktop 7 for Mac Build 7.0.15055 (Revision 740667; March 5, 2012)

I have created a virtual machine running Windows Server 2008 r2 Enterprise with SP1.

I am attempting to enable Hyper-V on this server.

When I attempt to do so, the Add Roles Wizard in Server Manager returns the following error:

Hyper-V cannot be installed

The processor on this computer is not compatible with Hyper-V.  To install this role, the processor must have a supported version of hardware -assisted virtualization, and that feature must be turned on in the BIOS.

Parallels take on the issue is summed up on this thread:

http://forum.parallels.com/thread3273.html

Apple has the following information:

http://support.apple.com/kb/TS2744

I have just gotten off the phone with a senior tech support representative from Apple.  He is elevating my support request to an engineer, who hopefully will not tell me that this is a Parallels issue, and Apple doesn't provide support for Parallels.  I should receive a response in four business days.

I figure it's one of three things...V

VT-X support is disabled on this machine. (Solution, Apple releases an EFI that enables it.)

VT-X support is enabled on this machine, but Parallels thinks it is not. (Solution, switch to Virtualbox?)

VT-X support is enabled on this machine, but the virtual machine is emuilating a processor that does not support it (Solution, read the fabulous manual)

I'd love to hear from anyone who may have a solution to this.  If I get more information, I will update this post.

P.S. - Why isn't there an option for Mac OS X v10.7.3 Lion in the "You Must Choose a Community" pulldown menu for this form?

I have run sysctl -a | grep machdep.cpu.features from terminal, and I see that my processor supports VT-X.  Yet, my virtual server says my processor doesn't support it.  Help?