My son's Dell M1530 began giving him trouble when he went to Germany last March. We ended up buying him another laptop and shipping it to him. He has now returned home and I'm trying to figure out what's wrong with his old one. It's a Dell M1530 with onboard graphics. 15.4" WXGA The screen will not show anything on POST. After it has began to boot Windows, it will show these lines, but only after closing and re-opening the lid. The lid switch on this model is a magnetic sensor. It displays to an external monitor perfectly via VGA & HDMI. I suspect it's the LCD, but I wanted a second opinion.