I am sorry, I thougt it was in french. I don not know where to post it elsewhere.

I install the last release of bitcoin core, the 15.0.1. For the last 4 hours, it is on the first windows saying "rewinding the blocs". I try to stop it but I got the window saying I have to wait (if I stop it violently, it takes me 15 days to reload the blockchain). I do not know what to do.