So I recently got an SSD (crucial mx500 500gb) and installed it in my Dell Inspiron 5675 desktop along side my 1tb HDD. I then attempted to change the boot drive to the SSD and so I tried to change the drive letters so windows booted on my ssd instead of my hdd. I think I some how messed up a step in the registry and now when I boot up my PC it goes to a black screen and I can only move my cursor around. The cursor has a flickering loading circle too. How do I fix this?