Apologies if this info has already been posted. I had somehow thought that having the Pro version of Windows 7 was enough.
"How to confirm your PC can run Windows XP Mode
Although OEMs have been shipping hardware virtualization in PCs for three years, hardware virtualization is not available in all PCs—so even if your PC is new, it may not have hardware virtualization. Additionally, those PCs with hardware virtualization have it turned off by default, so you will need to turn on the hardware virtualization capability before you can use it."
http://www.microsoft.com/windows/virtual-pc/support/configure-bios.aspx
"How to confirm your PC can run Windows XP Mode
Although OEMs have been shipping hardware virtualization in PCs for three years, hardware virtualization is not available in all PCs—so even if your PC is new, it may not have hardware virtualization. Additionally, those PCs with hardware virtualization have it turned off by default, so you will need to turn on the hardware virtualization capability before you can use it."
http://www.microsoft.com/windows/virtual-pc/support/configure-bios.aspx





, look up CPU model number from the vendor before buying, and checker whether it supports VT-x (for intel) or AMD-V (for AMD). The wikipedia article on
- carpe noctem










).