Plug the unit in to an external monitor and see if displays there. If it does, that usually means there is a hardware problem. Since this unit appears to be a couple years old you would probably need to take it to a local technician to get looked at.
It definitely seems to be a hardware issue, you can have it go to a local technician and see about getting it repaired. I know that Acer has a standard repair fee of $199, if you'd like to take that avenue as well, and their repairs come with a 90 day repair warranty.
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