I'm on their email list and just received this. Micro Center is still offering Win 7 Pro on some of their house brand machines. I purchased an i-5 equipped computer from them back in 2013 with Win 7 Pro and it's still going strong. Like mine, this one would probably make a pretty nice Hauptwerk computer for reasonable money and you can still get Win 7 Pro.
http://www.microcenter.com/single_produ ... c2e6719f30
Marc