Steven Sinofsky, president of the Microsoft Windows group, delivers his presentation at 

Steven Sinofsky, president of the Microsoft Windows group, delivers his presentation at the launch of Microsoft Windows 8, in New York,  Thursday, Oct. 25, 2012. Windows 8 is the most dramatic overhaul of the personal computer market's dominant operating system in 17 years. (AP Photo/Richard Drew)
Associated Press
Steven Sinofsky, president of the Microsoft Windows group, delivers his presentation at the launch of Microsoft Windows 8, in New York, Thursday, Oct. 25, 2012. Windows 8 is the most dramatic overhaul of the personal computer market's dominant operating system in 17 years. (AP Photo/Richard Drew)
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