I have used various types of laptops used almost every company laptop but they are not working properly but when I have baught the Dell copmany laptop I have saw diffrent changes which are not founded in other laptops.First biggest diffrence is that the battries of in other company laptops are so low quality and in Dell laptops used well quality batrries are used. The second diffrence is other company laptops are heating during using but Dell company laptops are in well condition after using up to three hours. Dell laptops have contain well heating fans inside them which release heat outside properly .