bootcamp assistant blocking

Good morning, i’ve Got a problem with bootcamp in my macbook aie (early 2014) when installing windows, as it does all the passages correctly but then when partitioning the disk it blocks(stays at the same point for several hours-all night). I’ve tried to restart the Mac, but it always block at the same point.

Moreover, i used to have windows on my Mac but I’ve canceled it... Now I need it again. Can someone help me? Thanks.