I have a couple of machines there that need a spring clean, a core2duo 3ghz and a athlon II at 2.8ghz (or thereabouts), both of em have 4gig of ram, only the core2duo has an additional 1g gfx card.

They were both running windows 7 when I got em, I wiped the core2duo and installed win10, which runs OK, but considering the machines are permanently offline and will only ever need to run office, some whiteboard software and VLC, are there some better options?

I know someone will say linux, but it needs to be used by women, so it has to be windars.