Somehow alive inside box of computer keyboard (7)
I believe the answer is:
clavier
'keyboard' is the definition.
(I know that clavier is a type of keyboard)
'somehow alive inside box of computer' is the wordplay.
'somehow' is an anagram indicator.
'inside' means one lot of letters goes inside another.
'box of computer' becomes 'cr' (I can't explain this - if you can you should believe this answer much more).
'alive' is an anagram of 'lavie'.
'lavie' inserted within 'cr' is 'CLAVIER'.
Can you help me to learn more?
(Other definitions for clavier that I've seen before include "Bach played it" , "Stringed instrument with a keyboard" , "Instrumental keyboard" .)