FILE - In this Wednesday, Feb. 29, 2012, file photo, Steven Sinofsky, president of Windows and Windows Live attends the Windows 8 Consumer Preview presentation during a press conference

 

              FILE - In this Wednesday, Feb. 29, 2012, file photo, Steven Sinofsky, president of Windows and Windows Live attends the Windows 8 Consumer Preview presentation during a press conference
FILE - In this Wednesday, Feb. 29, 2012, file photo, Steven Sinofsky, president of Windows and Windows Live attends the Windows 8 Consumer Preview presentation during a press conference at the Mobile World Congress in Barcelona, Spain. Microsoft is making a radical break with the past to stay relevant in a world where smartphones and tablets have eroded the three-decade dominance of the personal computer. Windows 8, set to be released Oct. 26, 2012, is supposed to tie together Microsoft's PC, tablet and phone software with one look. But judging by the reactions of some people who have tried the PC version, it's a move that risks confusing and alienating customers. (AP Photo/Emilio Morenatti, File)