It a very good product. And we can easily use that laptop I am also a HP user and I also get many positive results. And use are also a good customer so you also know that the laptop is easy to use or not. So I advise you that you purchase it and get the best result of it. I am not a inventor so I can not tell about that parts but I tell you about it Ram, Hard disk memory and also processor. It’s Ram is 8GB it HDD is 1TB it processor is i7 of 6th generation. It’s display is 15.6 and it’s operating system is DOS.