After the Vista debacle, Microsoft changed the way it makes software. The result – Windows 7 – is winning raves. Can a new operating system (and a new attitude) help the company take on Google?

With Microsoft's founder and chairman, Bill Gates, trotting the globe in a quest to abolish diseases, his handpicked successor, CEO Steve Ballmer, has had most of a decade to move the company beyond its two biggest cash cows, the Windows operating system and the Office productivity suite. So far, not so good.

The company's web forays, such as MSN, have only highlighted the dominance of Google and Yahoo. In software for smartphones, there is Apple, RIM (RIMM), and everybody else. MP3 players? Microsoft's Zune hardly merits a mention. And even the core franchise has suffered. In the face of slowing PC sales and the economic pall, Microsoft's fiscal 2009 revenue actually contracted, to $58.4 billion from more than $60 billion in fiscal 2008 -- and the company missed its earnings estimate by more than $1 billion.

Fresh Coat of Paint: Artist Ricardo Richey, commissioned by Fortune, spray-paints a street-smartversion of Microsoft'sname and Window's logo on a San Francisco wall.

But the biggest failure under Ballmer's tenure was self-inflicted. Vista was meant to be a wholesale reimagining of Windows, the brand name for Microsoft's operating systems dating back to the early 1980s. Every so often the company unveils a new OS, blandly named for the year of the release (Windows 95, Windows 98) or a geeky abbreviation (Windows XP is short for Windows Experience). Vista had a marketing-friendly moniker, a fancy user interface, new security architecture, a better file-storage system, and much more. More