Arrange damages over computer that malfunctioned (7)
I believe the answer is:
marshal
'arrange damages over computer that malfunctioned' is the definition.
'marshal' can be an answer for 'arrange' (I've seen this before). I am unsure of the rest of the definition.
'arrange damages over' is the wordplay.
'arrange' becomes 'hal' (I can't explain this - if you can you should believe this answer much more).
'damages' becomes 'mars' (marring is a kind of damaging).
'over' is a charade indicator (letters next to each other) (in a down clue, some letters go over others).
'hal' after 'mars' is 'MARSHAL'.
Can you help me to learn more?
(Other definitions for marshal that I've seen before include "Maybe a bulldog" , "French officer" , "Sports event official" , "Muster" , "US law officer" .)