Your PC Needs To Be Repaired? Fix! 0xc000000f

The 0xc000000f error means your Windows boot files are corrupted or missing, leaving you stuck on a recovery screen. You are likely seeing this because a recent update failed, a power surge interrupted your system, or your disk partition has become unreadable. We are going to rebuild your boot configuration from the ground up.

Why this happens

The Boot Configuration Data (BCD) store, which tells your computer how to launch Windows, is corrupted or inaccessible. This often occurs after an incomplete system update or an unexpected shutdown that interrupts critical write operations.

What you'll need

You will need a functional PC with internet access, an 8GB or larger USB flash drive, and the Windows Media Creation Tool to create a bootable installer.

Steps

1. 01
   Insert your Windows installation USB into the broken computer, restart it, and tap your BIOS key (commonly F2, F12, Del, or Esc) to enter the boot menu.
2. 02
   Change your boot priority so the USB drive is first, save your changes with F10, and boot into the installation environment.
3. 03
   Select your language settings, click 'Repair your computer' in the bottom left, and navigate to Troubleshoot > Advanced Options > Command Prompt.
4. 04
   Type diskpart and press Enter, then type list volume to identify the drive letter of your Windows partition by looking for the largest NTFS volume. Type exit to return to the command prompt.
5. 05
   Run bootrec /scanos, then bootrec /fixmbr, and finally bootrec /fixboot to attempt to repair the boot sector.
6. 06
   Run bootrec /rebuildbcd to scan for Windows installations; if prompted, type y to add the installation to the boot list.
7. 07
   If you receive an 'Access is denied' error during the process, run bootsect /nt60 sys and then run the bootrec /rebuildbcd command again.
8. 08
   Type exit, remove the USB drive, and restart your computer to see if it boots into Windows normally.

Still not working?

If the repair commands fail to find any Windows installations, your drive might be using an MBR partition style on a UEFI system, requiring a conversion to GPT. If the OS still refuses to load, run sfc /scannow and chkdsk C: /r (replacing C with your actual drive letter) from the command prompt to check for deep filesystem corruption. If these steps don't resolve the boot loop, you may be facing a failing hard drive or a partition structure that requires a clean Windows installation.

Frequently asked questions

Will I lose my files by running these commands?

No, these commands only repair the system files responsible for starting Windows and do not touch your personal documents or data stored on the drive.

What does it mean if 'rebuildbcd' finds zero installations?

This usually indicates that your disk partition style is incompatible with your system's current UEFI settings, often requiring a conversion from MBR to GPT to become bootable again.