Windows 8 Consumer Preview Setup will check to see if your PC can run Windows 8 Consumer Preview and select the right download. Setup also features a compatibility report and upgrade assistance. Built-in tools for creating an ISO or bootable flash drive are available for some previous versions of Windows (excluding Windows XP and earlier). You can find system requirements and additional information in the FAQ and in the links on this page.
Note before you download: Windows 8 Consumer Preview is prerelease software that may be substantially modified before it’s commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here. Some product features and functionality may require additional hardware or software.
To learn more about how we use your information, please read the Windows 8 Consumer Preview Setup privacy statement. If you would prefer not to use Windows 8 Consumer Preview Setup, you can download Windows 8 Consumer Preview in ISO format instead.
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.
SRC: http://windows.microsoft.com
