when it gets to the infinite black loading screen force a shutdown by holding the power button. Restart and do the same again - After several forced shutdowns and restarts it should automatically boot to advanced startup options when you can troubleshoot and perform a repair.
Alternatively insert your recovery USB drive and boot off that and go to troubleshooting and perform a repair.
http://www.tenforums.com/tutorials/2294-advanced-startup-options-boot-windows-10-a.html