As you may have guessed, this specific thread is all about the fist OS you ever encountered, or the one that came with your first computer. The first OS I ever encountered was Windows 95. It was at my primary school, they were ancient computers with CRT's. My first Computer (Laptop) came refurbished with Windows 7 Ultimate. The laptop in question was a cheap £99 HP laptop made for offices and the such. What about you? What was your first OS?