Sometimes the BCD may be corrupted resulting in odd or unexpected behavior. This doesn’t occur often, but when it does, it can be difficult to detect and analyze.
EasyBCD can reset the BCD configuration to a clean state, reverting all changes and removing all entries. To reset the BCD, in EasyBCD go to the “BCD Backup/Repair” page:
EasyBCD BCD backup-repair screen
Select the “Reset BCD configuration” option, and press “Perform Action” for the changes to take place.
Resetting the BCD will remove all entries from your bootloader. Make sure to re-add new entries for your operating systems (directions here) before rebooting your PC!