Hp laptop starts but screen goes grey

I have a Windows 8 Hp laptop its two months old. I closed the screen last night (without shutting down) and this morning it won't work. The laptop sounds as if its starting up but the screen goes grey. If I press F11 it will say F11.....Systems Recovery but can't do anything else. I have tried taking out the battery and holding the in button down for one minute but nothing happened. As a student this lappy is my life.