Windows startup errors 0xc0000428, 0xc000000f, and 0xc0000225 can occur for several reasons: for example, due to the computer shutting down while installing a critical Windows Update while upgrading Windows to a newer version or after Install new software or hardware on the system.

In most cases, errors 0xc0000428, 0xc000000f, and 0xc0000225 can be easily fixed by disabling digital signature checking or repairing the Windows boot loader.

This guide outlines the most common methods to fix the following problems in Windows 10, 8.1, 8, 7, or Vista-based computers.

Problems-Symptoms resolved with this guide:

  • “The application or operating system could not be loaded because a required file is missing or contains the error File: Windows system32 winload.efi – Error code: 0xc0000225”
  • “Your PC / Device needs to be repaired. The required device setting is not connected or is inaccessible.
  • error code: 0xc0000225. “
  • “Your PC / device needs repair Unable to load operating system because a file’s digital signature could not be verified error code: 0xc0000225 ″
  • “Windows could not verify the digital signature for this file: Windows System32 winload.exe – Error code: 0xc0000428”
  • “Windows Boot Manager Windows does not start Recent software or hardware changes may be the cause File: windows system32 boot winload.efi Status: 0xc000000f “

How to fix Windows boot error 0xc000000f, 0xc0000428 & 0xc0000225 (Windows 10, 8.1, 8, 7 & Vista)

  • Method 1: Disable Driver Signature Enforcement.
  • Method 2. Startup Repair.
  • Method 3. Check and repair the file system.
  • Method 4. Restore Windows Registry.
  • Method 5. Repair boot configuration data.

Method 1: Disable Driver Signature Enforcement.

First, let’s try disabling driver signature enforcement:

* Windows 7 & Vista:

1. Turn on your computer and press the F8 key as the computer boots, before the Windows logo appears.
2. At the Advanced Options Menu, use the arrow keys on your keyboard to highlight the Disable Driver Signature Enforcement option and then press ENTER.

Khắc phục lỗi 0xc0000428, 0xc0000225, 0xc000000f tại Windows Boot

3. If Windows usually starts, remove any recently installed program or driver (if any) and then search for and install all available updates via Windows Update.
4. Restart your computer.

* Windows 10, 8 & 8.1

1. At the Recovery screen, press the F8 key to boot the boot settings.

Vô hiệu hoá-Trình điều khiển-Chữ ký-Windows-10

2. At the Startup Settings screen, press 7.

Disable-driver-signature-enforcement

3. If Windows usually starts, remove any recently installed programs or drivers (if any) and then search for and install all available updates via Windows Update.
4. Restart your computer.

Method 2. Startup Repair.

1. Start your computer from the Windows media (DVD or USB).
2. At Language options, click Next.
3. Select Repair your computer.
4.

  • Windows 7 or Vista: Click Next and open Startup Repair.
  • Windows 10, 8.1 or 8: Choose Troubleshoot -> Advanced Options -> Start-up Repair.

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5. When the Start-up repair is completed, restart your computer.

Method 3. Check and repair the file system

1. Start your computer from the Windows media (DVD or USB).
2. At Language options, click Next.
3. Select Repair your computer.
4.Windows 7 or Vista: Click Next and open Command Prompt.

  • Windows 10, 8.1 or 8: Choose Troubleshoot -> Advanced Options -> Command Prompt

5. In command prompt type: bcdedit and press Enter.
6.
Note the drive letter of the operating system partition (e.g. “osdevice – partition = D:”)

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7. Then give this command * and press Enter :

  • Chkdsk D: / f

* Note: Replace the letter “D” according to your case.

8. When the test disc is complete, close the command prompt and restart your computer.

Method 4. Restore Windows Registry.

1. Launch in Command Prompt from Advanced Options.
2. In command prompt type: bcdedit and press Enter.
3.
Report the drive of the OS partition (example: “osdevice -> partition = C :”)

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4. Then type the letter of the OS partition +: and press Enter. (example C 🙂
5. Then, issue the following commands in order (Press Enter after each command):

  • Cd windows system32 config
  • Md backupold
  • Copy *. * Backup
  • Cd regback
  • Copy *. * ..

* Notice: Press when asked to overwrite all files in the destination.

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6. Type exit and press Enter to close the command prompt.
7. Reboot your computer.

* Note: If after restarting, your computer cannot boot, with the error ” Unable to load the operating system because the system’s registry files are missing or contain errors “(see the screen below), then boot from Windows Installation Media, launch a command prompt and restore the original registry files from the “backup old” folder, by issuing the following commands in order:

  • Cd windows system32 config backupold
  • Copy *. * ..

(Type exit and press Enter to close the command prompt and then restart your computer).

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Method 5. Fix boot configuration data

1. Start your computer from the Windows media (DVD or USB).
2. Launch the command prompt.
3. Follow the instructions below, according to your operating system version:

4A. Windows 7 or Vista:

A. In the command prompt, give the following commands:

  • Bootrec / fixmbr
  • Bootrec / fixboot

B. Close the command prompt and try to boot in Windows normally. If Windows still can’t start, restart the command prompt and give this command:

  • Bootrec.exe / rebuildbcd

C. After executing the bootrec.exe / rebuildbcd command:

  • Case A: If you see the message ” Total identified Windows installations: 1 “:

1. Press the Y key (Yes) to Add installation to the boot list .
2.
Restart your computer and try to boot in Windows normally.

  • Case B: If you see the message ” Total identified Windows installations: 0 ” then:

1. Type bcdedit and press Enter to find the operating system partition directory (example: “osdevice -> partition = C :”).

2. Then, type the following commands in order:

* Note: Replace the letter ” C ” with the operating system partition’s drive letter according to your case.

    • Bcdedit / export C: bcdbackup
    • C:
    • cd boot
    • Attrib bcd -s -h -r
    • ren C: boot BCD bcd.old
    • Bootrec / rebuildbcd

3. Press the Y key (Yes) to Add installation to boot list.
4. Reboot the computer and boot up in Windows normally.

4B. Windows 10, 8.1 or 8:

A. In the command prompt, give the following commands:

  • Diskpart
  • List volume

Note the number of the System Rese (“System Reserved”) volume and the Driver letters of the operating system Volume. *

* The ” System Rese ” volume contains the Boot Manager and Boot Configuration Data; it has the smallest size (e.g., 100MB, 350MB) of all works and if you use a UEFI based computer, then “System Reserved” in Fat32 format (Aka “EFI” volume).
** The operating system’s volume is the partition on which Windows is installed and usually the largest (GB).

Example In this example:

The number of the “System Rese” partition is “2”

The drive letter of the operating system volume is “D”.

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B. Select System Volume by typing this command: select volume 2

* Note: Replace the number “2” according to your case.

C. Then give the following commands:

  • assign letter = Z
  • exit

D. Finally, type this command:

  • Bcdboot D: windows / s Z: / f ALL

* Note: Replace the letter “D”, according to the operating system’s drive letter in your case.

E. Restart the computer and try to boot in Windows normally. If Windows doesn’t start, then follow the same steps, but at the end, type this command:

  • Bcdboot D: windows / s Z: / f UEFI