[Q] My Galaxy Mega has a problem. topic

I think this is the right place to post questions?

So I tried the rooting method here: http://forum.xda-developers.com/show....php?t=2355680
But it doesn't boot and stuck on "SAMSUNG" screen.
I tried using factory reset and simply trying again, but it still doesn't work.
What do I need to do to make it boot? :(

BTW the phone model is Galaxy Mega 6.3 LTE (SCH-R960).