One of the original system requirement (part of Windows 7 system requirements) for Windows Virtual PC (and hence Windows XP Mode) is that CPU must support hardware-assisted virtualization (HAV) and has the feature turned on or enabled in BIOS. The Windows Virtual PC (VPC) designed specifically for Windows 7, take advantage of HAV support on processor to improve the performance of virtualization technology (VT) when … Continue reading Download KB977206 to Run Windows Virtual PC (XP Mode or VM) With No Hardware Virtualization