my girl finally got her ps3 from her ex bfriends house, but now it started to act weird and it doesn't work. the thing is we saw him online the day b4, and now that i checked the serial number it match with the one in the box, did he mess it up or can he change internal parts like buy a bad one and transfer the inside so the serial can b the same? it might sound paranoic, i told her to throw it away but i don't want to keep the question