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The “BOOTMGR is missing” error is a common issue that occurs when starting up a computer or laptop. It refers to the missing or corrupt Boot Manager, which is responsible for initializing the operating system during the boot process. When this error message appears, it usually indicates that the computer cannot find the necessary files to load the operating system. There are several potential causes behind this error, including issues with the boot sequence, corrupted system files, or faulty hardware. However, resolving the “BOOTMGR is missing” error is generally achievable by following a few troubleshooting steps. In this article, we will explore the possible causes of this error and discuss effective methods to fix it, ensuring smooth system startup.
BOOTMGR, also known as Windows Boot Manager, is used to control the boot process of Windows. In the process of using Windows, you encounter the error BOOTMGR is missing. Let’s find out the reason and how to fix it in the article below.
The cause of the BOOTMGR . error
– BOOTMGR files are missing or corrupted or misconfigured.
– The hard drive or flash drive that the PC is trying to load is not properly configured, meaning the computer is trying to boot from a non-bootable device.
– If the hard drive is damaged or has bad sectors, then you may also get this error.
– Outdated BIOS and problems in upgrading the operating system also suffer from this error.
– Other reasons include: Damaged or misconfigured hard drive and files and damaged hard drive interface cable.
Fix error BOOTMGR is missing on Windows
a. Restart your computer or laptop.
First, try to restart your computer, laptop because most likely the other message is just a fake message or your computer and laptop may automatically fix the error and you can completely boot. your computer, laptop into the operating system normally.
b. Check the external storage device again.
Check the USB ports, memory card slots or external hard drives. Because most likely your PC is trying to boot from those devices and because they do not contain a boot file or an operating system that your PC can boot.
To fix this you just need to make sure they are disconnected or the floppy drive, the CD drive has no floppy or CD in it.
c. Use Windows Startup to fix Boot Volume errors.
Restart your computer and press the F8 key or the F12 key to activate Boot Settings.
On the next screen you choose to start the computer from the drive or USB drive.
After the boot process finishes, the Install Windows interface will be displayed on the screen. Here you select Language, Time and currency and Keyboard and then click Next.
On the next interface, select Repair your computer and then select your operating system version and click Next.
On the next interface, select Repair your computer and then select your operating system version and click Next.
Windows 7: On the System Recovery Options window, select Startup Repair to automatically scan and fix Windows errors.
Windows 8, 8.1 and Windows 10: After clicking Repair your computer, select Troubelshoot and then select Advanced options.
Next select Automatic Repair (Windows 8 and 8.1) or Startup Repair (Windows 10) to start fixing your Windows computer.
Once the process is complete, you will be asked to restart your Windows computer. Your task is to restart the computer and you’re done.
d. Write a new Boot Sector partition on Windows 7,8,8.1 and Windows 10.
If the “Boot Sector” partition is wrong or corrupted, your Windows computer will not boot properly and will display the error BOOTMGR is missing during the boot process. In this case you can fix the error by writing a new Boot Sector partition.
On Windows 7 : Access System Recovery Options then select Command prompt.
On Windows 8, 8.1 and Windows 10 : From the Repair your computer window, select Troubleshoot => Advanced options => Command Prompt.
On the Command Prompt window, enter bootrec /fixboot there and press Enter. Now on the screen you will see the message The operation completed successfully.
Next restart your computer by pressing Ctrl + Alt + Del.
Also if the BCD (Boot Configuration Data) fails,… Windows cannot boot either. At this time, the screen also displays the error message BOOTMGR is missing.
e. Reinstall Windows operating system
If you try the above methods and still do not fix it, the option to reinstall the operating system is the last option. But remember to back up your data before doing that.
f. Check your hard drive
If even the last step doesn’t work, it’s clear that your PC has a hardware problem. Please remove your hard drive and check the hard drive cables for loose or damaged, then try the above methods again. If that still doesn’t work, then you can only remove the hard drive and replace it with a new hard drive. Then proceed to reinstall a new operating system.
The above article shows you some ways to fix the error BOOTMGR is missing, hopefully it will help you in the process of using your computer!
In conclusion, encountering the “Error BOOTMGR is missing” message while starting a computer or laptop can be a frustrating experience, but understanding its cause and knowing the appropriate fixes can help resolve the issue. This error is typically caused by an incorrectly configured or damaged Windows boot configuration file (BCD), a corrupt or missing BOOTMGR file, or issues with the computer’s hard drive.
To fix this error, there are several potential solutions. Firstly, ensure that there are no external storage devices plugged into the computer, such as USB drives or memory cards, as they may interfere with the booting process. Secondly, check the boot order in the BIOS or UEFI settings of the computer and ensure that the correct device, usually the primary hard drive, is selected as the first boot option.
If the error persists, attempting a startup repair using the Windows installation disc or a bootable USB drive can be effective. This repair process typically involves accessing the System Recovery Options and selecting the “Startup Repair” option. Additionally, using troubleshooting commands like “bootrec /fixboot” and “bootrec /rebuildbcd” in the command prompt can help resolve boot configuration issues.
In some cases, the error may be indicating a failing hard drive. It is recommended to run a diagnostic tool, such as CHKDSK, to check for any errors or bad sectors on the hard drive. If issues are found, backing up important data and replacing the hard drive might be necessary.
Overall, the “Error BOOTMGR is missing” issue can be troubleshooted effectively by following the aforementioned steps. However, if the problem persists or if the user lacks technical expertise, seeking professional assistance is advisable to avoid further complications.
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