My first computer was a games console: Sega Master System, my dad bought for us from a friend who'd just purchased a Mega Drive: we didn't have the money for a new machine back then.
My first proper computer was a 386SX 25MHz machine, with 4MB RAM, a 43MB hard drive and an old VGA card with 256kB VRAM. It came with MS-DOS 6 and Windows 3.1. We got it in 1993, when most people already had better machines, but it's what my parents could afford, at the time. I often just used DOS because I couldn't be bothered to boot into Windows and I spent a lot of time programming in QBasic and playing games, so Windows just got used for school work.
Now I still use an old PC, an old 2006 era Intel Duo, with 1GB RAM and came with no hard drive, I got from a colleague, in exchange for a bottle of whisky. I soon added a sold state hard drive and upgraded to 3GB RAM, to make it usable. It runs PC Linux OS, because Windows nowadays is grim. The original plan was to buy a better machine soon, but point in getting anything better, because it suits my needs. My next upgrade will probably be another cast of from work or someone else. The days of having to upgrade, a basic machine used for general web browsing and office work, every two years are long gone.