The lines on your screen are mostly due to hardware problems. When a smartphone is dropped down on a hard surface or when it is exposed to liquids, the black line appears on the screen. The vertical lines on the screen indicate that the LCD cable is no longer connected to the logic board.
We live in a generation where technology is effectively used not only by the youngsters but also by elderly people. There is no stereotype that technology should be used only by the youngsters. The seniors find the laptop to be very useful to remotely access emails, photos, messages, watch movies and connect themselves with the social network.