Hii. friends, today i’m gonna tell you about my exprence of HP 15-AC636TU Notebook.this is the best laptop in the world, i’m using this laptop since 2 years and there is not problem in this laptop. it has a very long battery life, it works very smooth, it’s camera is clear enough . I have a black colour laptop . it come with WINDOWS 10 . the latest window . and I will give 5 star to this laptop. I will be recommend to all my friends.