Trudging through Windows 7's upgrade process drags users through as many as four wizards, 60 windows, and more mouse clicks than anybody at Microsoft cared to count. In a recent study covering PC upgrades, Redmond found this was simply too much of a hassle for many customers. The fix? Consolidate and streamline — according to the outfit's Building Windows 8 blog, upgrading customers will be able to power through installing Windows 8 using a single wizard in as few as 11 clicks. The new proce…