How to fix Bootmgr is missing in windows 8/10

“BOOTMGR is Missing”- this is one of the errors that comes around if you are using a Windows Operating System. It occurs and appears after one turns on the computer and the POST – Power On Self Test is done.  If anyone is facing this issue as well, then this article will be of help as it is all about the BOOTMGR and the plethora of ways to fix the error.

Firstly, what exactly is BOOTMGR? The Windows BOOTMGR or the Windows Boot Manager is a small part of the software that comes from the volume boot code that comes with the volume boot record. It is usually located in the C:\Drive. It is a read-only file, and it is the Windows boot sequence manager that was first brought in the Microsoft Vista. This current database has replaced the previous boot.ini file which was used in the older Windows versions.

What is the purpose of BOOTMGR?

BOOTMGR main purpose is to control the boot volume which in turn helps the BIOS to start. It aids in the starting of the Windows operation system, be it the Windows 10/8/7/Vista. The Windows BOOTMGR helps in executing winload.exe, and it reads boot configuration data and also exhibits the operating system selection menu. The BOOTMGR program grants a number of multiple operating systems to be booted from one computer.

Where is the Windows BOOTMGR situated?

The configuration that is required for BOOTMGR is located in the BCD- Boot Configuration Data store which is a holder database and the BOOTMGR file can be found in the root folder in the section stated as Active in Disk Management. On some of the Windows, the division is classified as System reserved and it does not have a drive letter. If the computer does not have the System reserved then the BOOTMGR is most likely located on the primary drive

Can the Windows BOOTMGR be removed?

The Windows BOOTMGR cannot be removed. Although it can slow the boot process slightly asking which operating system to boot but the user can reduce the wait time of the question that is on the screen and start. This can be done through the System Configuration tool and then choose the operating system and lower the time for a timeout.

Why does the BOOTMGR error occur?

BOOTMGR error applies only to the Windows operating systems of 10, 8, 7 and Vista. There are a number of causes for the various BOOTMGR errors, and among them, one of the most common error would be “BOOTMGR is missing.” These errors occur due to a number of causes and the common reasons for the errors are because of incorrect configuration or corrupted files, hard drive sectors, crashed hard disks, upgrading operating system issues, boot sector viruses, improper installations, old BIOS or hard drive interface cables that are either loose or damaged. The MBR gets damaged, and then the errors pop up. Most of the times, ‘BOOTMGR is missing’ is because the computer  is configured to boot from the optical drive, hard drive, flash drive or the floppy drive and if it is not set up properly to boot from  then  the computer faces error as it is trying to boot to a non-bootable disc, floppy disk or the external drive.

How to solve the error- BOOTMGR is missing?

If there is an issue with the Boot manager, be it BOOTMGR file missing or file compressed then the computer cannot operate normally as it usually does. The “BOOTMGR is missing” error is displayed on the screen after the computer is turned on and the error does not have a single cause for it being an error, so to find the solution various solutions should be tried on to find the final solution to solve the error.  In order to fix the error, you can follow some of the given steps below:

  1. The first step is the easiest as it requires you to follow the error message. As it mentions on the screen to restart, first restart the computer as the error displayed on the screen may just sort itself out after restarting.
  2. If this doesn’t work then you can choose the Startup Repair Option, there are a list of options so choose the Startup Repair Option and run it. This will try to fix the error by replacing any corrupt files or missing files.
  3. When the computer turns on, it scans for bootable devices and as one of the reasons for the BOOTMGR error is booting the computer from a hard drive that is non-bootable, the user ought to check the computer if and whether it is configured to boot from a non-bootable disks, such as the floppy disk, USB flash. If it so then removes all of the connected and removable media and ensures that the BIOS is not loading from any of these sources.
  4. If you find out the cause of the error and it still keeps happening then changing the boot order in BIOS might be a good choice so that the hard drive is listed as the first boot device and not any other non-bootable drives. The boot sequence in BIOS and the right hard drive/bootable device should be listed first, that is, if you have more than one drive.
  5. As BOOTMGR error may be caused by cables that are either not plugged or plugged in loosely or because of the malfunctioning power so check and reseat all of the internal data, including the power cables. There is also the option of replacing the PATA/SATA cable if it is not right.
  6. The ‘BOOTMGR is missing’ issue can sometimes be due to an outdated BIOS version, so it is necessary to keep the motherboard’s BIOS up to date.
  7. Check the BCD- Boot Configuration Data and the Partition boot sector, a corrupted or wrongly configured or other damage may cause the error.
  8. Check the hard drive as well as the settings of the other drives in the BIOS and make sure that they are all right. The computer’s BIOS configuration instructs it on how the drive should be used and so, therefore, the wrong settings or the wrong sequence can create various BOOTMGR errors. An Auto setting is also available in BIOS for the hard disk and the optical drive configurations which are suitable for those who do not know on what to do exactly.
  9. Another way to repair the issue is to repair the Master Boot Record, the MBR. The error can be caused by the damage of the MBR which can be from virus or corrupt system, improper operation or even due to the sudden power outage.
  10. Reinstallation of Windows from the top is also another option as this will remove the Windows from the computer completely and then reinstalling it would be neater, and any issues with the BOOTMGR would be resolved. Albeit for this process, all of the data in the computer should be backed up and then restored after reinstalling. If not done so then the data and files would all be lost.
  11. If all of the solutions mentioned above fail then, it is likely that the computer needs the hard drive to be replaced and then a new copy of the Windows, not reinstalling it as the computer might have a hardware problem.
  12. To Startup Repair, with the installation disc- the Windows 8 installation disc is required, if there is no disc, then the Windows Boot Genius will do just fine as well. So take the following steps below to solve the error-
  13. Firstly insert the disc in the disk drive and then start the computer, the user can press any of the keys to force the computer to boot from the installation disc.
  14. Follow the given procedure such as choosing the language, input method and so on.
  • Then the user can click on the link in the main interface written as ‘Repair your computer’ and further select the Troubleshoot and then the Advanced options and lastly the Command Prompt.

  1. Select the drive where the Windows is at and then type and enter C: or D:
  2. Then enter cd D:/Windows
  3. After the user gets in the Windows 8 folder, start the repairing of the BOOTMGR with bootrec/fixboot and press enter and then bootrec/fixmbr and then press enter.
  4. To use the Windows Boot Genius, which any user can get as it is free to download. The following steps can be taken:
  5. Insert a blank CD or a USB in the computer with the software installed and then click on ‘burn’ in order to create a CD or USB that is bootable.
  6. After which, insert the USB or the CD and click on F12 so as to access the Boot Menu. Then choose the USB or the CD as the First boot device

  • Then launch the Windows Boot Genius and select the Windows Rescue, then try the solutions that are offered.

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