Encode resetting PC entry (7)
I believe the answer is:
encrypt
'encode' is the definition.
(synonyms)
'resetting pc entry' is the wordplay.
'resetting' is an anagram indicator (I've seen 'reset' mean this).
'pc'+'entry'='pcentry'
'pcentry' is an anagram of 'ENCRYPT'.
(Other definitions for encrypt that I've seen before include "Obscure significance" , "Encipher" , "Put (a message) into code" , "Change into coded version" , "Obscure words of" .)