what version of windows is this?

Hi all.
I have spent most of today working on my dissertation so that I can get it out of the way for the hand in on Monday. I have finished it, so now I can focus on the scene.
Today I worked on the windows in the scene. Here are the results

.I created an emissive map so that certain windows would be lit up, and other wouldn't.

What do you guys think?
cx

P.S. I have been having problems with my PC today, so I have had to struggle against that as well.