FILE - In this Monday, July 16, 2012, file photo, Microsoft CEO Steve Ballmer speaks at a Microsoft event in San Francisco. Ballmer can't afford to be wrong about Windows 8. If the dram

 

              FILE - In this Monday, July 16, 2012, file photo, Microsoft CEO Steve Ballmer speaks at a Microsoft event in San Francisco. Ballmer can
FILE - In this Monday, July 16, 2012, file photo, Microsoft CEO Steve Ballmer speaks at a Microsoft event in San Francisco. 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. (AP Photo/Jeff Chiu, File)