Bill Gates founded Microsoft in 1975. He stepped down as chief executive officer in January of 2000 and in 2006 began working full-time for the Bill and Melinda Gates Foundation. See where Bill Gates went to school next. Up Next How Windows 8 Works How do I upgrade the version of Android on my tablet? Do tablets have a crash screen like other computers? 5 Important Jobs Your Operating System Handles Without You Knowing Are touch-screen interfaces changing operating systems?