It comes with Windows XP Professional preloaded. It includes Windows Media Player and Movie Maker within the operating system. There are no disks included, so it would be prudent to create a boot disk using something like what is described here: http://www.ehow.com/how_5426643_make-windows-xp-boot-cd.html Licenses are irrelevant because this computer comes ready to use. All programs installed, besides the standard XP programs, are easily found online for free by searching their names, so if you loose the system for whatever reason, you can reinstall them again. I've ordered three of these refurbished laptops and they have all been great! Hope this helps.