Microsoft unveils Windows 8

Microsoft CEO Steve Ballmer's future may depend on the success of Microsoft Windows 8, which he unveiled in New York on Thursday.

In this photo provided by HP, Far East Movement performs to celebrate the launch of HP's new line of Windows 8 touch-technology products Wednesday, Oct. 24, 2012 in New York. On Thursday in New York, Microsoft will unveil a dramatic overhaul of its ubiquitous Windows operating system. (AP Photo/HP)

In this photo provided by HP, Far East Movement performs to celebrate the launch of HP's new line of Windows 8 touch-technology products Wednesday, Oct. 24, 2012 in New York. On Thursday in New York, Microsoft will unveil a dramatic overhaul of its ubiquitous Windows operating system. (AP Photo/HP)

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