{Solved} Fix Bootmgr is Missing Error in Windows 10

Sometimes, while starting the computer system, we come across boot manager errors. Boot Manager is a type of program which helps the operating system to start.

The major causes of bootmgr is missing error are booting from unbootable devices, corrupted file systems, BIOS problems, etc.

How to Fix Bootmgr is Missing Error

We have discussed 5 methods to fix the Boot Manager Missing issue in Windows 10 Operating System in this article.

Method 1: Use Automatic Repair

The automatic repair tool of Windows 10 might be useful for you for fixing the bootmgr is missing issue. This method requires the user to possess the Windows Installation Disk or USB drive and can be done by following these steps:

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Step 1: At First, Insert the Windows installation disk into the CD Drive of your computer. Then boot from CD or DVD.

Step 2: Select Repair Your Computer option.

Step 3: Then Select Troubleshoot option from the list of options displayed.

Step 4: Here select Advanced Options from the list.

Step 5: Now click on the Automatic Repair option and wait for the process to complete.

That’s all. Restart your computer, and you should be able to boot your system now. But if the bootmgr is missing issue persists, you should try one of the methods below.

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Method 2: Repairing Boot Sector

In this method, you will have to use the command prompt to fix the bootmgr is missing issue. To do that, follow the steps below:

Step 1: At First, Insert the Windows installation disk into the CD Drive of your computer. Then boot from CD or DVD.

Step 2: Select Repair Your Computer option.

Step 3: Then Select Troubleshoot option from the list of options displayed. Also, this method would help you fix Unmountable Boot Volume Error.

Step 4: Here select Advanced Options from the list.

Step 5: Now click on the Command Prompt option. You will have the command window displayed on your computer screen.

Step 6: Type the following command and hit enter.

bootrec/rebuildbcd

Wait until you get a message for successful completion of the task.

Step 7: Again, type another command given below and press the enter key.

bootrec/fixmbr

Wait until you get a message for successful completion of the task.

Step 8: Now type the following command and press the enter key.

bootrec/fixboot

Wait until you get a message for successful completion of the task.

Step 9: Finally, Type exit and press the enter key to exit the command window.

It is all you need to do in this method. Now restart your system, and you should be able to boot your system. In case the issue is not resolved yet, we have other methods. Keep reading this page to know them.

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Method 3: Repairing Windows Image

Now that repairing boot configuration data (BCD) didn’t work for you, it is possible that repairing Windows Image can do some good to fix your issue. To repair Windows Image, you need to follow the steps given below:

Step 1: At First, Insert the Windows installation disk into the CD Drive of your computer. Then boot from CD or DVD.

Step 2: Then select the Repair Your Computer option.

Step 3: Select Troubleshoot option from the list of options displayed. Also, this method would help you resolve any Windows 10 Slow Shutdown Error as well.

Step 4: Here select Advanced Options from the list.

Step 5: Now click on the Command Prompt option. You will have the command window displayed on your computer screen.

Step 6: Type the following command and press the enter key.

dism/online/cleanup-image/restorehealth

This process takes around 20 minutes to complete so you should wait patiently until the operation is completed.

Step 7: Now type exit and press the enter key to exit the command window.

It is it. You can now restart your computer, and most probably, you shall find that the bootmgr is missing Windows 10/7 issue which once caused problems is nowhere to be found. But, if you can still find the issue, you should try changing the boot order which is discussed in the next method.

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Method 4: Changing Boot Order in the BIOS Setup

The bootmgr is missing issue might be a result of BIOS problems on your computer. To solve that problem, you need to follow these steps:

Step 1: At First, Start your computer system.

Step 2: Enter the BIOS Setup. You can use the appropriate keys to enter the setup.

Step 3: Click on the Boot tab.

Step 4: Select the Boot Device Priority option from the list shown on the screen.

Step 5: Make the Hard Disk Drives the top priority for booting. Also, do make sure that your PC doesn’t have any Hard Disk Problem persisting already.

Step 6: Save the changes made by you and exit.

Now you can restart your computer system to check that the bootmgr issue has been fixed. But if it has not happened yet, then we would tell you to use the next method given below.

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Method 5: Fixing the Corrupted File System

Since you have not been able to fix the bootmgr is a missing error yet, it means your system has corrupted the file system, and you need to fix it. To fix the damaged file system, you need to follow these steps:

Step 1: Insert the Windows installation disk into the CD Drive of your computer. Then boot from CD or DVD.

Step 2: Select Repair Your Computer option.

Step 3: Select the Troubleshoot option from the list of options displayed.

Step 4: Here select Advanced Options from the list. This can also help you fix the Windows 10 Random Restart Error.

Step 5: Now click on the Command Prompt option. You will have the command window displayed on your computer screen.

Step 6: Type the following commands and press the enter key after each command.

diskpart
select partition 1
active

You will find a message as “Diskpart marked the current partition as active”\

Step 7: Type exit and press the enter key to exit the command window.

Now you are done. Restart your computer and this time; you will find that you have successfully fixed the bootmgr is missing issue on your system.