Windows XP Mode and Windows Virtual PC, available on Windows 7 Professional and Windows 7 Ultimate, allow you to run multiple Windows environments, such as Windows XP Mode, from your Windows 7 desktop. Till now to run XP mode, users need to have requirements like 1 GB of RAM, 15 GB of available disk space, and processor capable of hardware virtualization with AMD-V or Intel VT turned on in the BIOS . Computers without VT technology could not use XP mode.
Recently, Microsoft has released a patch to remove the Hardware Virtualization requirement to run the Windows XP mode in Windows 7. Failure of availability of VT technology throws errors while install Windows XP mode on your Windows 7 system like :Windows Virtual PC cannot start because this computer does not support hardware-assisted virtualization
- Unable to start Windows Virtual PC because hardware-assisted virtualization is disabled
To resolve from this issue, Microsoft has released a update called KB 977206. By Installing this update you can use Windows XP mode feature in your Windows 7 without Virtualization support.
Note : Your PC must run genuine Windows 7 to install Windows XP Mode.
More Info : http://www.microsoft.com/windows/virtual-pc/download.aspx