Windows 8 was the final straw when they pushed that Metro UI crap and effectively scared a lot of users away. Most businesses held onto XP and eventually Pro 7 when XP was internally killed: On Amazon you can see a lot of Windows 7 PRO Optiplex machines most are a piece of crap as you cannot find replacement parts these days since all the comp stores are practically gone. Frys we always got parts and had a lot of old computers refixed almost like new and a few times build our own.