When Microsoft (MSFT 1.58%) introduced Windows 8, the goal was to modernize the PC experience to remain relevant in the world of mobile computing. Unfortunately, the plan has backfired and now Gartner expects worldwide PC shipments will fall by 3.5% this year, marking the second year in a row of decline. By the end of the year, Microsoft will get another shot at reviving the PC market with its release of Windows 8.1. In this video, Fool contributor Steve Heller examines Windows 8.1's improvements and if it will be enough to stage a PC resurgence.