Important Note: make sure your processor supports Virtualization Technology and is enabled. Windows 8 will not work if your processor does not support Virtualization Technology. Most processors support Virtualization Technology but the option is not enabled by default. You can enable Virtualization Technology option from the BIOS. Now let’s begin!
Important: If you decide to go back to your previous operating system, you’ll need to reinstall it from the recovery or installation media that came with your PC, which is typically DVD media. If you don’t have recovery media, you might be able to create it from a recovery partition on your PC using software provided by your PC manufacturer. Check the support section of your PC manufacturer’s website for more information. After you install Windows 8, you won’t be able to use the recovery partition on your PC to go back to your previous version of Windows.
Windows 8 Consumer Preview ISO images