Remove the CF card and battery.
Re-insert the battery and close the card door (NO card in the camera)
Does it boot?
If so, the card is corrupt but the bootflag is set. That is, the files that have to be on the card aren't but the camera is being told to look for the card files.
Either (1) reformat the card (in which case it will boot without loading ML) or (2) fix the card so it has the correct files on it.
Re-insert the battery and close the card door (NO card in the camera)
Does it boot?
If so, the card is corrupt but the bootflag is set. That is, the files that have to be on the card aren't but the camera is being told to look for the card files.
Either (1) reformat the card (in which case it will boot without loading ML) or (2) fix the card so it has the correct files on it.