Windows 8 is a updated version of windows 7. the main drawback behind windows 8, 8.1, or 10 is installation problem. it is too difficult to know about boot key during installation. .And it is not user friendly or not easy to use. an window 7 is more reliable or easy than windows 8 and more. suppose a person know about windows 7 that how to use or operate window 7 suddenly they want to work on windows 8 then even they cant restart the system with windows 8. for windows 8 system configuration shoould be high and an updated i3, 14, i5 processor required. in windows 7 no such types of terms and conditions are required