I was watching a movie the night before and i put it to sleep. When i woke up i tried booting it up but after the when the windows 8 logo comes up the screen turns completely black then black with backlight lit and then completely and so on. But it doesnt go beyond that point i tried everything i let it run like that for hours, took the battery out. But when i press f12 it takes me to the setup page and i did an extensive system test and everything passed so im not sure what the problem is. Please if you can help me answer. 
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