New
#11
That would seem to be the case, as Lenovo says...Windows 7 Laptops | Affordable Lenovo B50-80 | Lenovo USEach Lenovo B50 comes preinstalled with Windows 7 Professional
...on the Features tab for this model, only to contradict themselves on the Tech Specs tab.
Windows 7 Laptops | Affordable Lenovo B50-80 | Lenovo US
Operating System Windows 8.1
Presumably the specs page was updated in its lifetime, but they forgot to do so on the Features page. Or maybe you got a choice of OS at the first 'out of the box' power up.