So, yesterday I did a windows downgrade everything went good. But when I booted up my pc it felt a bit slow and strange. I looked at my explorer and saw that my D:\ was gone. When I looked further into it I found out that my SSD and my HDD where just put together in my C:\ drive. Now, 5 hours later, I still do not have a fix for this. Hope somebody here might have a solution or anything in that direction.