[help] n8020 restarted alone & stay at logo & don't enter System!

oh my god!
what is happened?

it was at my side on the bed, not under usage. it did a restart .. alone .. and could not enter the system. it freez at logo!

i tried:
- to wipe, but could not help.
- get the last backup with cmw, but could not help.
- flash tle stock recovery with odin, but gone fail.
- flash a fresh stock room with odin, but gone fail.
- flash pit file with odin, but gone fail.

it can enter download and recovery modes.

what was happened?
i am not beginner and could help many people with much of problems, but .. this thing is totally new for me.

who can help please? i can not still without my note. i use it all the time, specially now where i am in a new country and city

so .... heeeeeeeeeeeeeeeeeelllllllllp