I was going to turn off my laptop, and for some reason when I clicked the power button, nothing would happen after several tries and minutes of waiting. Hasn't happened before, so I just held the power button for 6 seconds, and when I tried to turn it on again later it would show the windows 8 logo and would then sit at a black screen for an infinite amount of time. The first time I go to the BIOS I can't seem to get it to go anywhere else, if i save and exit it'll go black for a second and reload the BIOS, if I just exit without saving it still comes back. Same with ctrl alt delete. Also tried turning off fast boot, changed nothing. What should I do?