If you own a computer, you know of Microsoft Windows. In fact, it’s still the most widely used operating system and cloud service in the world, with 7 out of 10 computers using it. As a result, Microsoft is one of the most valuable companies in the world. Find Out: How To Start Investing With Less Than $1,000 Up Next: 8 Common Mistakes Retirees Make With Their Social Security Checks Since it went public on March 13, 1986, its stock has grown exponentially. What if you could go back in time and invest $1,0 ...