It now shows up on my A1 but I don't think I could install MOS1.4 from there - then again, maybe it's just a case of copying the files over from the CD?
IIRC copying files from CD to HD is enough... but cant be sure.
However it looks like it is hardware problem. Serial debug could tell what goes wrong but have you tried morphos ml? Ralph & co rarely hang on forums... but it looks like fatal hw fault :-/