Michael Dell founded his $90 billion company—once the largest PC maker—as a 19-year-old in his college dorm. Here’s his secret to making it big

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Some of the most successful tech companies in U.S. history started from humble beginnings. Former Apple CEO Steve Jobs built the tech giant’s first computer model in a garage—and Dell’s founder started his $90 billion legacy from his dorm room. Another thing they have in common—they were both college dropouts. 

While many businesses have modest beginnings, Dell says risk-taking focused his mind.