1. Send to Samsung for repairs, hopefully under warranty and if not and want instant gratification then take to your local computer shop.
2. Hook the computer to an external screen whether that is a computer monitor or TV and see if you have different results.
3. Pull out the HDD and try to boot using another computer.
If you try the external monitor and the results are the same then there is something wrong with more then your screen. If the computer renders Windows just fine then you need a new screen which you could pay to have replaced or watch a youtube video on how to do it yourself.
I have a Positivo Firstline notebook without HDD and with a broken screen working... I have installed Windows XP into a 32 GB pendrive and connected the rig to an old 15" LCD. It became a kind of ThinPC, but works fine...