Ok Guys. I don't know if you have heard of this problem but while in windows 8, i lost all my drivers because i was downgrading. But the problem is I used Samsung's SW Updater and was updating all my drivers automatically until it came across the BIOS update. It froze my screen during this update so i waited about 6 hours before force restarting. Now my computer boots with a black screen and the hard drive light comes on for the first like 5 seeconds before it turns off (the computer and fans still go just the hard drive light turns off). I have done so many things and even sent the laptop to Samsung for repair. They told me that my NP700Z5A - S04US laptop costs $950 in repairs because of a bunch of motherboard and screen issues. All help will be much appreciated and I am able to open the laptop if you want me to change stuff. I can answer any questions.