black screen e250

My e250 was bought new only a few years ago, less than 5 years. It was working perfectly fine until recently. Suddenly, when I turned it on, it only shows a black screen with a tiny (1 or 2 cm) long skinny horizontal line in the lower left part of the screen. I can’t even plug it in to my computer to try to fix it. What do I do?                                                    -alex96100-