hm could be an firmware corruption? ...
this is strange because when my camera crashes the Edge Overlay detected too much objects (all the screen was full of yellow pixels) and that was when started the problems on my cam..
Afther that i was tried to found a "hard reset" combination like press power button + some other button .. but it was useless ...
*sigh i think i must to buy another camera jejeje
.... someday..
But if anyone haves a possible solution please send a reply on this topic