My nc2660 has been doing this insanely annoying thing. When I power it on, first displays the hp flash screen which freezes and is very dim. The only way to shut it off is to either pull the power supply or long press the power button. So I'll try again. As soon as it boots you can see the screen is dimmly lit. Sometimes it'll take a few tries to boot. Sometimes it seems it will never boot. That dim screen has to be significant, I've seen splash screen freeze before never with a dull screen.