DOA's are usually the easiest to exchange.
Just tried to boot a brand new asus x502c laptop for the first time, and the screen is black. I had charged it for 6 hours, and it has the green, solid light showing it is fully charged. I don't hear anything after hitting the power button. However, I can BARELY see that it says to choose a language. None of my other family members see this, so it is pretty much black screen. Additionally I've tried brightening the screen (fn+F6) but that isn't doing anything, either. Any suggestions?