Learn how to upgrade to Windows 8.1 from Windows Vista or Windows XP using a Windows 8.1 DVD.
Learn how to upgrade to Windows 8.1 from Windows 7 using Windows 8.1 Upgrade Assistant.
Get answers to common questions about using Upgrade Assistant and buying, downloading, and installing Windows online.
Learn how to download and install Windows 8 in a few steps by using just a product key.
Get answers to questions about updating to Windows 8.1, including system requirements, how to purchase, and what files, settings, and apps you can keep.