Lenovo G50-80 comes with windows 10.1 OS, which is very user friendly and advance.
also it houses 1TB hard disk with 4GB DDR3 RAM. its a 15.6 inch laptop, sleek n light which makes it very handy.
key pad is swift and soft in use, the finger pad supports multiple touches for scrolling and zooming.
also being a lenovo product it has some lenovo pre-installed softwares which helps keeping the device updated and secure.
online services are available 24*7 if you register your device.or else service centers are easy to locate.