Windows Server 2012 R2 Boot Repair Fix Here
Navigate to > Advanced options > Startup Repair .
Assign a drive letter to it so you can access it by typing assign letter=Z . Exit Diskpart by typing exit . windows server 2012 r2 boot repair
On the regional settings and keyboard layout screen, click . Navigate to > Advanced options > Startup Repair
On newer updates of Server 2012 R2, running bootrec /fixboot can trigger an "Access is denied" error. If this happens on an MBR setup, use the boot sector code update utility to re-register the system boot structure: bootsect /nt60 sys /force Use code with caution. After executing this, retry your bootrec /fixboot routine. Summary Reference Table Boot Issue Partition System Remediation Step / Black Screen Legacy BIOS / MBR bootrec /fixmbr →right arrow bootrec /fixboot →right arrow bootrec /rebuildbcd EFI Boot Error / Missing Boot Device UEFI / GPT Assign letter to FAT32 partition →right arrow Run bcdboot C:\Windows /s S: /f UEFI Infinite Recovery / Boot Loops On the regional settings and keyboard layout screen, click
bcdedit /export C:\BCD_Backup attrib C:\boot\bcd -s -h -r ren C:\boot\bcd bcd.old bootrec /rebuildbcd