Acer's signature keyboard is much easier to digest on a laptop this price, compared to something more expensive like the Acer TravelMate Spin P4. It's not my favorite because of the mushy feel ...
Make sure the computer is not in a sleep mode, check the cable connections, restart the display, and make sure the computer is using a compatible display mode. For more information, see HP support document Flat Panel Monitor Displays Message About No Signal, Signal out of Range, Sleep, or Power Save .