Windows Error Code

How to fix Windows error code 0xc00000f ?

windows error code

Get the fix for Windows XP, Vista, 7, 8, 8.1 or 10 operating systems to “0xc000000f: Error attempting to read the boot configuration data.”

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About the “0xc000000f” error

NeoSmart Technologies has compiled the following information on this error, based on the information collected and reported by our global network of engineers, developers and technicians or partner organisations.

Description and Symptoms

This error is linked to the following error messages, alerts, warnings and symptoms.

Symptom 1: 0xc000000f error screen on startup

As part of the system startup procedure, the BOOTMGR bootloader first introduced in Windows Vista and used in all later versions of Windows, including Windows 7, Windows 8 (.1) and Windows 10, is using a database of entries and configuration options known as the BCD (Boot Configuration Database), which acts as a global store for all boot-related options and settings on new Windows PCs. If the BCD file is not found, however, an error of “0xc000000f” appears and the boot process is stopped.

This is a screenshot of this error during the startup of Windows Vista and Windows 7:

Win7 0xc000000f startup error

Windows didn't start. A recent change in hardware or software may be the cause. To fix the problem: 
1. Insert your Windows installation disc and restart your computer.
2. Choose your language settings, and then click "Next."
3. Click "Repair your computer."

Contact your system administrator or computer manufacturer if you don't have this disk. 
File: \Boot\BCD

Status: 0xc000000f

Info: When trying to read the boot configuration data, an error occurred.

And here’s what Windows 8, Windows 8.1 and Windows 10 look like:

Win8 0xc000000f startup error

Recovery

Your PC needs to be repaired

The PC's boot configuration data is missing or contains errors. 
File: \Boot\BCD
Error code: 0xc000000f

You'll need to use your installation media's recovery tools. Contact your system administrator or PC manufacturer if you don't have any installation media (such as a disk or USB device).

Causes of this Error

As a result of one or more of the following, this error has been known:

Cause 1: BCD is missing or corrupt

One of the most common reasons for this error is the missing or corrupted BCD. This could happen manually when configuring the BCD due to disk write errors, power outages, boot sector viruses or errors.

Cause 2: File system integrity compromised

The file system itself can be corrupted or damaged for the same reasons. This happens even more often when a PC is turned off while crucial data for the boot sector is being written in the middle.

Cause 3: HDD data cable is faulty

Like all components of our PCs, data cables on the hard drive tend to deteriorate as time goes by. If the same cable is used for several years (or even on different computers), periodic read / write errors can affect the loading process.

Fixing “0xc000000f” on Windows

Windows Setup CD/DVD Required!
Some of the solutions below require CD or DVD installation from Microsoft Windows. If your PC did not have a Windows installation disk or if you no longer have a Windows setup media, you can use Windows Easy Recovery Essentials. EasyRE finds and fixes many problems automatically and can also be used to solve this problem in the following directions.

Fix #1: Rebuild BCD via Easy Recovery Essentials

The one-click automated system repair feature of Easy Recovery Essentials includes full repair and reconstruction of the BCD to solve the “0xc000000f” error, even in cases where Windows does not boot due to the error.

EasyRE’s automated boot repair component addresses all BCD-related problems, fixes the BCD or recreates it from scratch using the correct encoding and path for the partition that refuses to properly load.

The “0xc000000f” error is automatically fixed by Easy Recovery Essentials using its built-in Automated Repair option. For Windows XP, Vista, 7 and 8, EasyRE is currently available and can be downloaded and created on any PC.

  1. Download Essentials for easy recovery. Before downloading EasyRE, please note your Windows version (XP, Vista, 7 or 8). This guide can help you determine which Windows version you have installed.
  2. Burn the picture. Follow these instructions on how to carefully burn the bootable ISO image, as it can be difficult to make a bootable CD! These instructions also explain how to create a bootable USB stick / drive for EasyRE recovery.
  3. Boot your PC from the CD or USB you created from Easy Recovery Essentials.
  4. When EasyRE runs, select the option “Automated Repair” and click Continue.

    EasyRE Home

    Choose “Automated Repair” in Easy Recovery Essentials

  5. After EasyRE scans the drives of your computer, select the drive letter from the list for your Windows installation and then click the Automated Repair button.

    EasyRE displays a list of found Windows operating systems

    Choose the drive associated with the Windows installation you’re trying to repair.

  6. Easy Recovery Essentials will begin analyzing problems with the selected drive. EasyRE will test the disk, partition, boot sector, file system, bootloader and registry errors and try to correct them automatically. No intervention is necessary, as the repair of EasyRE is fully automated:

    EasyRE: Automated Repair

    Easy Recovery Essentials searches for errors and corrects the selected installation of Windows.

  7. EasyRE will report its findings once the process is complete. To restart your PC and test the changes, click on the Restart button.
  8. The error “0xc000000f” should now be fixed when the PC starts loading:

    EasyRE: Automated Repair

    Windows, booting up successfully.

You can download Easy Recovery Essentials from here.

Fix #2: Make sure no additional devices are plugged in

Before jumping into the command line or Startup Repair, try another restart with the fewest number of devices and external drives connected to the computer. This will ensure that nothing added to the computer recently does not cause this problem. Recent USB drives, CDs, DVDs, etc. would be best to unplug. This also includes a reader for memory cards. Make sure you have disconnected all external drives and USB keys or USB jump drives, then try again.

Fix #3: Use Startup Repair to repair BOOTMGR

Startup Repair can be used to scan the system for damaged or missing system files on Windows Vista, Windows 7, Windows 8, Windows 8.1 and Windows 10 to replace the BCD file if it is corrupted or missing.

Windows Setup CD/DVD Required!
Some of the solutions below require CD or DVD installation from Microsoft Windows. If your PC did not have a Windows installation disk or if you no longer have a Windows setup media, you can use Windows Easy Recovery Essentials. EasyRE finds and fixes many problems automatically and can also be used to solve this problem in the following directions.

Startup Repair is an automated diagnostic and repair tool that can be used to find and repair common problems from the Windows setup disk. More information can be found in our knowledge base about how Startup Repair works and what it does. Startup Repair from the Windows setup disk is initiated by the following steps:

Unable to boot into the Windows setup CD?
For troubleshooting and more detailed instructions, see our guide to setting up a PC to boot from the CD or DVD.

  1. Insert your Windows installation DVD into your PC’s CD-ROM drive,
  2. Fully power down your PC, and make sure it has fully shut off,
  3. Power up your PC,
  4. Press any key when you see “Press any key to boot from CD or DVD..”
  5. After selecting your language and keyboard options, click on the link “Repair your computer” in the bottom left corner. Windows 7 setup Install Now dialog, with repair your computer link
  6. Wait for Startup Repair to scan your PC for Windows installations, then select your install from the list it shows:
    Startup repair lists available operating systems to repair.
  7. Choose “Startup Repair” from the list of available recovery options to begin:
    Startup Repair lists all available recovery options, choose a recovery tool
  8. Startup Repair will begin scanning your installation for known issues and will attempt a repair, if possible.
    Windows Startup Repair is searching for problems

Here is an example of what the PC’s startup repair should look like once the BCD file is properly restored:

Missing BCD file restored by Startup Repair

Missing BCD file restored by Startup Repair

Fix #4: Rebuild the BCD manually

Since a missing BCD often causes the boot error, reconstruction is often a good solution.

Here are the steps to rebuild the BCD:

  1. Boot from the Windows install disc
  2. Click on Repair your computer after selecting proper language, time and keyboard input.
  3. Select the Windows installation drive, which is usually C:\, and click Next
  4. Choose Command Prompt when the System Recovery Options box appears
  5. Write the following command and press Enter afterwards:
    bootrec /rebuildbcd
  6. If the program finds a Windows installation and asks whether it should add it to the boot list, press Y

Here is an example screenshot of what the console output of the PC should look like once the BCD is rebuilt by Bootrec.

Bootrec utility results screen

Bootrec utility results screen

Fix #5: Check your data cables, BIOS and drivers

Unplug and plug all HDD data cables again. If changed, return to previous drivers and BIOS settings or use the BIOS option “Restore factory settings.” Make sure you write down all previously selected current BIOS settings, just in case you need to switch back. If the error is caused by a change in the BIOS or firmware mode of the SATA disk controller, the fix can be as simple as entering the BIOS and changing the “mode” setting of the SATA controller. The exact instructions differ from manufacturer to manufacturer, but the options are similar to what is shown in the following screenshots.

To check the boot order, follow these steps:

    1. Restart the computer
    2. Press the necessary key to open BIOS menu. This key depends on the computer manufacturer and computer model. This is usually listed on the first screen that appears on the monitor. It can be any of the following: EscDelF2F8F10 or F12.
    3. If the screen shows multiple keys, find the key to open “BIOS”, “setup” or “BIOS menu”
    4. Attempt to toggle between all three (or more) modes until a combination that results in Windows booting successfully once more is found.

BIOS loading screen

Notice the key guide in the top-right corner

BIOS configuration screen

BIOS configuration screen

Fix #6: Check your disk with CHKDSK utility

If the file integrity of the hard drive is compromised, the built-in Windows CHKDSK utility can be used to scan the disk and fix errors in the file system.

Here are the steps to run CHKDSK:

  1. Boot from your Windows install disc
  2. Click on Repair your computer after selecting proper language, time and keyboard input.
  3. Select the Windows installation drive, which is usually C:\, and click Next
  4. Choose Command Prompt when the System Recovery Options box appears
  5. Write the following command and press Enter afterwards:
    chkdsk C: /f

    Replace C: with the letter of the driver where Windows is installed.

Here’s an example of how the console output of the PC should look when the chkdsk.exe is complete:

Chkdsk utility results screen

Chkdsk utility results screen

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