Purchased 05/2014 for 86! Full License DVD. I was reluctant to go on W8.1. In the end it's really not bad Windows. At first it is a little lost, disoriented, with bricks, but you can disable this display system A start very very very fast !!!! it changes from XP !!! (My config: 8GB of RAM, CPU Intel Core i5 4570S 2.90 Ghz, Asus motherboard, HDD 7200) W8.1 is very intuitive and very fluid. No crashes or other, that of happiness (the drivers have all been found). I hope this version will allow the upgrade to Windows 10. For me only good things, the only flaw no "start" menu !!! but we made it.