FILE - In this Tuesday, May 22, 2012, file photo, Microsoft CEO Steve Ballmer delivers a speech during a Seoul Digital Forum in Seoul, South Korea.  Microsoft CEO Steve Ballmer can't afford to be wrong about Windows 8. If the dramatic overhaul of the Windows operating system flops, it will reinforce perceptions that Microsoft is falling behind other technology giants as the world moves on to smartphones, tablets and other sleek devices from Apple, Google and Amazon. If Ballmer is right, Windows 8 will show that the world's largest software maker still has the technological chops and marketing muscle to shape the future of computing.  (AP Photo/Lee Jin-man)
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