My screen of my Lenovo Ideapad S400 recently stopped working.
It is less than a year old, and Lenovo/Medion state that it is not covered by warranty since it looks like having been damaged. Nothing the like has happened. I just sent it to sleep the previous day, then the next morning I 'awakened' it and got a mainly grey-blueish screen with some strange pattern in one corner and some stripes across it. There is no physical damage on the screen.
My question is: What is the cause of this? How can this happen/be explained? Has anyone else experienced anything similar?