Windows 8 could be biggest challenge for Ballmer

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Windows 8 could be biggest challenge for Ballmer

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Windows 8 could be biggest challenge for Ballmer

by Associated Press Videos 1:45 mins

Microsoft has officially launched Windows 8. The revamped software, which runs on PCs and mobile devices, is a release CEO Steve Ballmer can't afford to be wrong about. (Oct. 25)

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