Hardly / I / go back / sleep when / loud noise upstairs / wake / up.

A Hardly had I gone back to sleep when a loud noise upstairs wake me up.

B Hardly I had gone back to sleep then a loud noise upstairs woke me up.

C Hardly had I gone back to sleep than a loud noise upstairs woke me up.

D Hardly had I gone back to sleep when a loud noise upstairs woke me up.