It is a gud laptop having high quality I am giving it 3 starts because its stucking.and it has low sound.and I should advice u buy it from shopclues u will get 100 % satisfaction.and u need to buy tweet spekers to resolve sound problem otherwise its gud.I have bought window 10 it does not matter it is duos or not original costs very much I would recommed to buy duos. Thankyou.