I am rather put out with articles that discuss Windows 8 Pro but refer to it as Windows 8.
The cited article does not mention that Windows 8 does NOT include Hyper-V. You need Windows 8 Pro.
Oh and if you purchased a new computer with Windows 8, to upgrade to Pro costs $69. And no the $40 deal will not work. attempting to purchase the $40 version leads to an "unavailable" message.