Hi ,
For test if your CPU is ready for Windows 8 x64 Hyper-V , you should first test it through – coreinfo.exe tool by Mark Russinovich –http://technet.microsoft.com/en-us/sysinternals/cc835722.aspx or in my SkyDrive – „Veřejne“ on right side of this web page
run cmd.exe as administrator and start coreinfo.exe with parameter -v like below in the picture
My laptop is ready for installing feature Hyper-V on Windows 8 x64 🙂