First computer I used was running Dos and Windows 3.1. But my favorite Windows version is XP, I was doing service desk / junior sysadmin at the time and XP was

First computer I used was running Dos and Windows 3.1. But my favorite Windows version is XP, I was doing service desk / junior sysadmin at the time and XP was just so easy to work with. You could fix a lot of problems by simply editing the registry or files in the windows folder directly and you could re-image a machine in about 2 minutes. The control panel was really easy to navigate and consistent. I really wish XP was still supported.