Instructions to quickly fix Boot Loader errors on Windows 10

If your computer cannot boot due to Boot Loader error on Windows 10, you can fix it by repairing the Master Boot Record (MBR) via Command Prompt. Let's find out how to do it in the following article.

Causes of Boot Loader errors

1. Lost boot file due to power failure

- When the computer suddenly loses power, the boot file may be corrupted.
- The computer cannot recognize the operating system the next time it starts.

2. The system is attacked by a virus

- Some viruses can delete or modify boot files.
- Lead to Boot Loader errors and black screen when turning on the computer.

3. Impact from software or system updates

- Incomplete Windows updates can corrupt the MBR.
- Removing or changing hard drive partitions can cause loss of boot data.

Prepare before fixing the error

1. Create Windows bootable USB

- You need a Windows installation USB to fix Boot Loader errors.
- If you don't have one, you can create a bootable USB using the Media Creation Tool from Microsoft.

Note: If you don't know how to do it, you can refer to many ways to create a USB to install Windows available on Free Download.

2. Check the key to enter Boot Menu

- Depending on the device, the key to enter Boot Menu can be F12, F11, Esc or Del.
- Press this key as soon as you turn on the device to select USB boot.

How to Fix Boot Loader Error on Windows 10

Step 1: Boot from Windows USB

- Plug the USB boot into the computer.
- Start the computer and enter the Boot Menu (press F12 or the corresponding key).
- Select USB as the boot device.

Step 2: Plug the USB into your computer or laptop, then turn on the device (or restart it).

Step 3: As soon as the laptop or computer starts up, quickly press the F12 key (some other devices are F11) with some popular computers and laptops to enter Boot Options mode and select the USB name to proceed to fix the Boot Loader error on Windows 10.

Step 4: Right after entering the Windows installation section, the system will ask you if you want to repair Windows , click YES .

Step 5: Continue to select the keyboard layout as US .

Step 6: Go to Choose an option, then select TroubleShoot .

Step 7: Continuing with the Advanced Options section , we access Command Prompt to proceed to fix Boot Loader errors on Windows 10.

Step 8: Wait a moment for the Command Prompt interface to appear, we will start typing the command to fix the MBR error.

- Type the command: bootrec /fixmbr and press enter.

- If the result says Successfully, continue typing the command bootrec /fixboot and then press enter.

- The result shows that both lines are Successfully, please type the Exit command to exit and then restart the computer.

After completing the above steps, your computer will boot normally and you can continue using Windows 10 as before.

If you encounter  the error Boot Configuration Data File is Missing  when using Win 10, you can refer to the troubleshooting guide from TipsMake to handle it quickly.

Isabella Humphrey

Update 18 February 2025