Blank screen coming in Gateway laptop

Hi everybody,
I have purchased a Gateway NV53A laptop and there was no issues so far. But suddenly it started showing the blank screen. When I bought it, it starts processing, but then stops and show a blank screen. However the power lights are on. After many hours if I left it off it got booted, but when I restart it is again showing a blank screen. What is the problem with my computer? Any help is much appreciated.
Thank you very much in advance.
