“Bootmgr Is Missing”- Solution’s Encyclopedia

Every morning I get up and look at my phone and it’s not possible, I won’t get a single mail about people asking me for getting this problem on their PC’s. So, I finally decided to write a complete tutorial article about it.

 photo 42190013297502742_zpsnb1nzkdt.jpgAnd in this article I’m gonna tell you everything about this error, like what it is, why it’s happening to your computer and mostly, how to fix it?, I know it’s a tricky problem but I’ll do my best to make everything Clear To You!! And Sorry for making it a little bit long but I bet you, you can’t find any working solution besides those what I’ve written below. Yeah!! Thanks me later.

Let’s start with:

What Is BOOTMGR (Windows Boot Manager) By The Way?

 photo speech-bubbles-with-question-marks_23-2147510127_zps9ttgw9lv.jpgWindows Boot Manager or I say BOOTMGR whatever it calls, it’s a windows boot manager which is normally located in your computer’s operating system boot volume (Mainly C:\ drive).

The main work of this Bootmgr is to control boot volume which helps to start winload.exe when a computer starts to load pre-installed windows.

If you don’t get it then, let’s split this word. BOOT+MGR, In a technical language Boot means startup and you know what manager is, that means it’s your computer’s process who’s fully responsible for starting your computer’s operating system.

Bootmgr is only located in Windows 10, Windows 8.1, Windows 8, Windows 7 and Window Vista, you can’t find this bootmgr file in the previous version of Windows OS like Windows XP, but that doesn’t prove XP won’t have their own boot managing department. Windows XP does having its own boot manager which is named differently and called NTLDR.

This error can be shown as:

  1. “BOOTMGR is missing
    Press Ctrl Alt Del to restart”
  2. BOOTMGR is missing
    Press any key to restart

When And Why Our Computer System Starts To Show BOOTMGR Is Missing?

Normally “BOOTMGR Is Missing” error occurs right after when we start our computer and that means our computer’s bios can’t able to find the boot file on our hard disk’s boot volume to start our windows and in the end, it displays the error on the plain black background screen.

The bad thing about this is, it does not rely on a single thing and you’ll need to find out which is creating this problem. But don’t worry about it because you will fix it quickly, just read.

 photo stock-illustration-29911568-computer-trouble_zpsenkfs8xv.jpg

There are so many reasons why we are getting this error on our computer and those are –

  1. Operating system’s Boot Volume Files Corruption
  2. Operating System Problem
  3. Hard Disk Problem
  4. Bios Problem

Note: This error means your windows is not in running condition so, you’ll need to do things by using your windows setup bootable disc.

So, Let’s Fix BOOTMGR is Missing Problem

Solution #1. Remove Every Connected USB

When our computer starts it will scan every bootable device connected to it and if anything bootable is connected to your PC besides your systems hard disk then it possible you’ll seeing this error on your screen.

So, if you’ve have an external hard drive, pen drive or bootable disc is connected to your PC, then the first thing I want you to do is, disconnect or I say remove it.

Feedback By Lola On 4.Jan.2016

Hii desk it’s my 500 GB WD external hard dive who creating this problem, thanks I successfully fix my computer. 🙂

remove usb to solve 0x0000000a

Solution #2. Fixing Boot Volume By Startup Repair

Note: This Solution No.2 is only for Windows Vista, 7, 8 & 10. if you having the ntldr is missing problem with Windows XP then you should skip this step and move to Solution No.3 below.

Most of the times our windows files got corrupted and forget their boot volume where bootmgr is mainly located and starts to making this type of error. In this second solution, I’m gonna teach you to fix your windows boot volume corruption by a Windows Installation Disk (yes you can use a bootable Windows Setup USB).

I only suggest you to use Windows DVD/USB according to your computer’s installed windows version. That means, if you have Windows 7 installed in your computer then use a Windows 7 installation disk or if your computer having a Windows 10 on it, then use a Windows 10 setup disk.

  1. First, you’ll need to boot your windows disk or USB by boot menu or boot sequence priority. If you don’t know how to do this these given link below will help you to boot your disk or flash drive.

How to Quick Boot A USB or CD/DVD Directly From the Boot Menu ?

How To Change the Boot Order (Boot Sequence) in BIOS ?

  1. Second after booting click on “press any key to boot from CD or DVD” to boot windows setup disk or Usb.

  1. Now you’ll need to get to startup repair or automatic repair according to your windows version for repairing your windows and make it back to normal.

Now: Click to expand the solution according to your windows version, given click below on this line in the blue outline rectangular box

Solution No. 2.1 - Startup Repair for Windows Vista & 7

Note: Move to Solution No.1.2 for Windows 8 & 10 Startup repair.

Right after when the booting was done you’ll able the see the setup’s first menu option and in that options you’ll need to Click on “Next” and after that click on “Repair your computer” to starts your startup repair function.

After that, it will scan your computer’s drive and show you your previously installed operating system. Now Select your listed OS version and click on next to start windows startup repair.

If you can’t find your windows listed in there, then skip this solution and move on to next.

Now wait until the startup repair gets complete.

Solution No.2.2 - Startup Repair for Windows 8/8.1 & 10

Right after when the booting was done you’ll able the see the setup’s first menu option and in that options, you’ll need to Click on “Next” button and after that click on “Repair your computer” to starts your startup repair function.

After that, it will show you three options and you’ll need to select the second one called “Troubleshoot” and then right under the troubleshoot menu select the third option called “Advanced options”.

Now select start up repair on Windows 10 or Automatic Repair on Windows 8 to repair your computer.

Feedback By David On 26.Jan.2016

I had the same “BOOTMGR is missing” whenever I tried to startup my PC.  I ran the Windows Startup Repair as described above and I’m back up and running.  Thanks!!!

Solution #3 – Fixing Hard Disk Boot Volume By CMD

The best way to fix our hard disk boot volume is to fix it by CMD Command Prompt and I know it can be tricky but it’s the only best and quickest way to fixing it.

First you’ll need to open CMD on your computer screen and then just type some CMD command in it to fix boot volume.

I know you won’t be able to use your operating system, but we need command prompt:

So, there is link given below which will help you out to open cmd on your computer’s screen without an operating system.

4 Different Ways to Run Cmd on Your Computer?

After when you’ve opened Cmd, now there three step by step things what I want you do and those are-

  1. Make Partition Active
  2. Fix Boot Files
  3. Rebuild Boot Files.

And after doing every single step and I want you to restart your computer and test it, maybe the problem can solve by doing just single step.

Click to See Solution 3.1 - How To Make Partition Active

An active partition is a partition in your computer’s hard disk which known as bootable partition who contain your PC’s operating system. Normally only one partition can be active at the time like c: drive where our windows is installed.

Sometimes that partition got inactive due to some reasons and we’ll need to reactive it in order to start our PC.

Feedback By James on 21.Jan.2016


First, open cmd on your computer’s screen then type the command what I’m listed below:

Command #1 – diskpart

This command will start disk part utility in your command prompt. When diskpart will start you’ll able to see “DISKPART>” on the left side.

Command #2 – list disk

This will list all of your connected drives in your computer.

Command #3 – select disk 0

In this step, we’re selecting our main hard drive where your window is installed. In my case, I’m selecting disk 0 because that’s the only drive shown in my cmd and that’s the also one where my OS is installed.

Command #4 – list partition

This command will show you all the partitions created in that disk what you’ve selected.

 photo 4-listpartitions-min_zpsbfdtcukm.jpg

Command #5 – select partition 2

Normally we are selecting partition 2 because that’s our windows partition but that does not prove we will always need to select the 2nd one because sometimes partition 1 can be our windows partition too. So, select the partition where your windows is installed.

Note: Never Select 100 MB, 350 MB And 500 MB Partitions.

Command #6 – active

That will make your partition active.

 photo change-active-partiton-from-command-prompt-picture01_thumb-min_zpsc1fvz6aq.jpg

Command #7 – exit

Now restart your computer and test it.

Click to See Solution 3.2 - How To Fix Boot Volume.

It’s possible your boot volume got corrupted by some recently installed Software, Viruses or Windows/Software updates and it’s better to get it repair as soon as possible.

So, now we are using the cmd command to repair our hard disk boot volume and now you’ll just need a cmd to type the command into the command prompt.

Command 1# – Diskpart

Command 2# – List volume

Command 3# – Exit

You’ll need to find your windows drive letter in that list, like mine is 29 GB D: drive.

Now you know what is your drive letter is, so just enter your drive letter in the command prompt and repeat the following command given below.

Command 4# – D:  (Your Windows Drive Letter)  

Command 5# – Bootrec /fixmbr

Command 6# – Bootrec /fixboot

Command 7# – Bootrec /rebuildbcd  {Skip this command only for the first time and use it if skipping this won’t works after testing but definitely use the chkdsk command written below in every try.}

Command 8# – Chkdsk  /f    (Try chkdsk /f /r If “Chkdsk /f” command Won’t Works)

Command 8# – Y

After “chkdsk” command completes, just restart your computer and I hope your problem is solved.

Solution #4 – Finding & Fixing Harddisk Problem

There is a change you having this BOOTMGR Is Missing problem because of damaged and improperly connected hard disk drives. The best way to find does your hard disk is working properly or not is to check HDD connection status in bios to ensure that your HDD is connected properly to your computer.

First, open your computer bios and go to “Boot Setting” or “Standard Cmos Features” or may be on a page which shows you your computer having a hard disk attached to it.

If you find your HDD connected properly then you can try to change boot setting and give your Hard disk as a first boot priority, link given below will help you out with boot sequence configuration. So, set your hard disk to first boot device and save its setting.

How To Change the Boot Order (Boot Sequence) in BIOS ?

If you can’t find your HDD listed on your computer’s bios then it’s possible your HDD is not connected properly because of a faulty wire or maybe your Hard disk got dead. if you can’t see your HDD on bios then you can try to fix it by changing hard disk “Sata” or “Ide” cable or maybe if replacing cable won’t work either then you should try to change HDD power connect with other free connectors which were normally coming from the PSU.


Solution #5 – Fixing Corrupted Windows or Bios

At last, there are some couple or more things remains which may be the helps you to get rid off this Bootmgr is missing problem and those are –

  • Corrupted windows on your hard disk– corrupted operating system is the most command reason for this error and there are two options you’ll have to fix your OS back and those are, restoring OS or reinstall OS. Given detail in the link below will helps you to understand both.

Sytem restore – System Restore is a feature in Microsoft Windows that allows the user to revert their computer’s state (including system files, installed applications, Windows Registry, and system settings) to that of a previous point in time. Click here to see the full details >>

Reinstall Windows – It means reinstalling your operation system in your computer by deleting the old one . Click to see >> How To Install Windows Xp, 7 Or 8?

  • Old Bios – If you can’t find any reasons for this error even not bad hard disk then at last maybe it’s a minor problem in your computer bios and it’s possible it can be fixing by updating it to the new version and that will make it work perfectly.

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  1. This ( your fix for a missing boot manager) doesn’t work. I built the miniXP you recommended and booted it from a USB drive. Runs Great. Thanks. BUT solution 3.2 doesn’t work. bootrec is not a recognized command. Apparently these commands don’t work outside a recovery environment, and if I could bring up an RE I wouldn’t have gone through all this…

    Am I missing something?

    • Sometimes this (3.2 solution) commands doesn’t work on some windows and in that case, I want you to use startup repair and that’s the only option which can help you to repair your windows, or otherwise use system restore if startup repair wont works.

      • I tried to install windows 7 on my pc but on installation of upto 6 %it showed error missing corrupt files and upon starting for installation i had formatted my hard disk, after that when i restared my pc it showed me bootmgr is missing .. What to do

        • Ask a friend if you could download an iso of win7 make sure it’s correct edition? Same as yours. Run a hash check on it and then if its a sound download burn it to a disc. Then to be even more reliable use universal USB creator and make a windows 7 live USB. Go into your bios on your machine make sure your pc can boot from USB then set your cd drive as first device and USB as 2nd device. Leave this as your default setting. This way you can always run either windows or Linux rescue and diagnostics discs and/or USB sticks on your machine in case you run into such issues or even completely bork your harddrive. I had the same problem as you. I used puppy Linux live cd copied all of my sensitive data off the drive onto an external drive and then reformatted the drive to “unallocated” don’t repartition it as windows is too stupid to install in this manner. It prefers to set up it’s on boot sector! So very crucial to leave it unallocated after formatting it. I couldn’t be bothered with recovery, 9 out of 10 times it fails, don’t have that kind of time to waste!!!! So I’d advise to just do as i did, get your data off, wipe the drive and reinstall windows. If you have a licence your windows should automatically reregister with this? I can’t guarantee win 7 will do this as i can only speak of experience doing this with win 10 pro!;-) good luck. All else fails, just dump windows and use Linux mint !:-)

    • The commands do work but you have to leave out the hyphens I.o.w. just type disk part and hit return. I got as far as list partitions as I deleted mine as per someone else’s instructions and created a new one. But for some strange reason I could not reinstall as error of bootmanager missing?!!! So I really don’t know what to do other than give up on windows and just run Linux on this machine, I had the feeling the day would come???!!!!!

  2. Before getting this error, it was showing me “This windows copy is not genuine” and yesterday i took apart my cpu to clean it, and since then it hasn’t started. Is it possible that not genuine windows is the cause of this error?

  3. Thanks for your help, Madhur Tj!

    In my case, my USB external hard drive was causing some sort of interference in the boot procedure. To fix, I removed the USB, launched BIOS, changed the boot order so UEFI boot was top priority (instead of CD/DVD drive), rebooted and viola. Then plugged the USB back in after another test boot and everything’s back to normal.

    Cheers again.

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