My screen is not cracked however it has grey lines inside

I don't think I have dropped my tablet or anything like that but when I power it on it just has grey line across the screen and it is immpossible to do anything on it.# Hit <enter> to insert another list item, and <enter> twice in a row to end the list. To get subitems, repeat the bullet character once for each level of indent you want (e.g. ##)