Panos Panay, the general manager of Microsoft Surface, holds up the tablet during a press conference in New York on October 25. Microsoft kicked off sales of its revamped Windows 8 system and the ... more 

Panos Panay, the general manager of Microsoft Surface, holds up the tablet during a press conference in New York on October 25. Microsoft kicked off sales of its revamped Windows 8 system and the tablet Friday amid mixed reviews as the tech giant ramped up efforts to compete in a market shifting rapidly from PCs to mobile devices less