I also had similar issue. The laptop booted quite alright but nothing was showing on the screen. I tried most of the suggestions except removal of ram because I didn't have appropriate screw driver. What solved the problem is a post I saw on another site which is pasted below. It might be of help to you. Here's the post:
"For people like me who are supposed be a tech expert and tried every thing on a display problem laptop here is ans--
maybe your hinge is broken and the wire which connects display to motherboard is stuck between hinge
hence try opening laptop and move that wire a bit so it don stuck again
my problem solved by this
Laptop - Samsung np00e5z-aodin
(quite old )"