Turned on the new PC? (4)
I believe the answer is:
woke
This clue is a double definition.
'turned' is the first definition.
(waking is a kind of turning)
'the new pc?' is the second definition.
('woke' roughly means 'politically correct')
'on' is the link.
(Other definitions for woke that I've seen before include "Ceased to sleep" , "Roused from sleep" , "Stopped sleeping" , "Came to" .)