Windows Server 2012 R2 Boot Repair Direct
This is the first line of defense. Windows Server 2012 R2 includes a built-in Startup Repair tool that automatically scans and fixes common boot issues.
Steps:
Outcome: If successful, the server will reboot normally. If it fails, you’ll see a message: "Startup Repair couldn’t repair your PC." Proceed to the next method. windows server 2012 r2 boot repair
Type these commands one by one, pressing Enter after each:
bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd
| Error Message | Likely Cause | Immediate Action |
| :--- | :--- | :--- |
| 0xc0000225 | Missing or corrupt BCD | Rebuild BCD (Method 2) |
| 0xc000000f | Boot selection failed | Run bootrec /rebuildbcd and bootmgr fix |
| 0xc0000001 | Corrupt registry | Restore from RegBack (Method 4) |
| Bootmgr is missing | Inactive system partition | In DiskPart, mark partition as active |
| Inaccessible boot device | Faulty storage driver | Boot into Safe Mode or Last Known Good Configuration | This is the first line of defense
Windows Server 2012 R2 remains a workhorse in countless enterprise environments, prized for its stability and feature set. However, even the most robust server operating systems are not immune to boot failures. A server that fails to boot can mean downtime, lost revenue, and frantic IT troubleshooting.
Whether you are facing the dreaded "0xc000000f" error, a "Bootmgr is missing" prompt, or an infinite loading loop, this guide will walk you through every possible method to perform a Windows Server 2012 R2 boot repair—from built-in recovery tools to advanced command-line maneuvers. Outcome: If successful, the server will reboot normally
Sometimes the BCD store is corrupted. Rename it and rebuild:
bcdedit /export C:\BCD_Backup
attrib C:\boot\bcd -s -h -r
ren C:\boot\bcd bcd.old
bootrec /rebuildbcd
Do not begin any repair blindly. Follow these preparation steps first: