You may use a Windows 8 Recovery Disk to run the Automated Repair to correct an issue with the BCD (Boot Configuration Data).
If the Automatic Repair is unable to resolve the issue, you may use a manual method to repair the BCD.
Once booted into Windows 8 Recovery Disk, launch the command prompt.
Type in diskpart and the prompt will appear.
Type in these DiskPart commands:
sel disk 0 list vol
Locate your FAT32 EFI System partition from the list. You will need to assign it a drive letter with the following DiskPart commands:
sel vol 3 assign letter=b:
Now exit DiskPart by typing in "exit" to return to the regular command prompt.
From the command prompt type in the following:
cd /d b:\EFI\Microsoft\Boot\ bootrec /fixboot
Next, rename the BCD file:
ren BCD BCD.bak
Use bcdboot.exe to create a new BCD store with this command:
bcdboot c:\Windows /s b: /f ALL
At this point you may reboot your system. The issue should be resolved.