Have this issue with a laptop screen on an acer. It seems to boot up, but the screen is wierd, it doesn't give me a picture, you can see the screen comes on, but barely, you see fine lines, it "lights up" but with dark lines in some places, vertical. This laptops OS isn't necessarily good either, so if I plugged a monitor in, it might not get a picture until it gets to the desktop, right? In which case, I still wouldn't be able to rule out the screen, unless you can give me an idea after what I've just said.