I got a blue ray for Christmas, and I told my son he'd have to get it hooked up for me, because that would be too tough for brain to handle.
Well, with only an HD compatible tv, the only way he could get it to work is if we switch cables from the DVD player to the TV and back and forth. I figured I could handle that. Couldn't get it to work. Spent an hour messing aorund with settings and such.
Finally realized I'd put the blue cable in the green and vice ersa. It makes me so mad when I do something stupid like that!
Just know you're not alone - and yes there are many in the people in the world that don't have MS that don't even know where to start hooking something like that up.
Ask a teenage neighbor boy. Pay him five bucks and he'll probably have it done in a few seconds

!