6. The Surface RT Steve Ballmer was forced out of his CEO chair by Microsoft's board of directors, when the company took a $900 million write-off to account for an oversupply of the firm's struggling Surface RT tablet. While announcing the earnings for its fiscal Q4 2013, Microsoft showed a $900 million loss due to Surface RT "inventory adjustments," a charge that comes just a few days after the company officially cut Surface RT prices significantly.