Video with totter

Hello,
from a few days i’ve got problems with my raspberry pi.
I’ve updated to 1.6.0 then to 1.6.1, than tried to go back to older version of rasplex, but problem persists.

I have my video img browsing through menu that totter, it seem as there is a Electric discharge, then when a movie is started i have got no problem, only when using rc to go through menus.
I thought it could be a power problem, but i changed 3 different power supplier, but nothing changed.

I don’t know if my rpi broke or if is there any option i can try to change.

Any suggestion?
Tnx