Computer found by girl in play (7)
I believe the answer is:
macbeth
'play' is the definition.
(Shakespeare play)
'computer found by girl' is the wordplay.
'computer' becomes 'Mac' (Apple Mac computer).
'found by' says to put letters next to each other.
'girl' becomes 'Beth' (girl's name).
'mac'+'beth'='MACBETH'
'in' is the link.
(Other definitions for macbeth that I've seen before include "Shakespearean play" , "Ill-fated Shakespearean king" , "Shakespeare's Scottish play, considered unlucky" , "He doth murder sleep (Shak.)" , "its name must not be mentioned" .)