Reinstate or reset somehow (7)
I believe the answer is:
restore
'reinstate' is the definition.
(synonyms)
'or reset somehow' is the wordplay.
'somehow' indicates an anagram.
'or'+'reset'='orreset'
'orreset' with letters rearranged gives 'RESTORE'.
(Other definitions for restore that I've seen before include "Repair, put back" , "Bring back; renovate" , "Bring back, reinstate" , "Make good, reinstate" , "Refurbish" .)