2012 saw the debut of the latest version of Microsoft’s latest operating system, Windows 8. Windows 8 debuted in an unusually tense atmosphere for a Windows device, as “Wintel” (Windows PCs powered by Intel processors) faced unprecedented threats from tablets and smartphones in the marketplace. Windows 8 PCs faced sales declines over the 2012 holiday period, and the changes in the interface of Windows 8 from Windows 7 have been a major cause of concern for many consumers. Questions such as, “How can I find my old files if I upgrade to Windows 8?” and “Will Steam run in Windows 8?” are extremely common. Another common topic for questions is the difference between Windows 8—the operating system for conventional Windows desktop and laptop PCs, and Windows RT—the operating system for Windows tablets. In this article, let’s take a look at how compatibility in Windows 8 works and what the differences between Windows 8 and Windows RT mean.