如何修复 Windows 10 中缺少 BOOTMGR： ^{(How to fix BOOTMGR is missing in Windows 10: )} “Bootmgr is missing Press Ctrl+Alt+Del to restartWindows引导扇区损坏或丢失而发生的最常见的引导错误之一。您可能会遇到BOOTMGR错误的另一个原因是，如果您的 PC 尝试从未正确配置为从其启动的驱动器启动。在本指南中，我将告诉您有关“ BOOTMGR ”以及如何修复 Bootmgr is missing 错误^{( fix Bootmgr is missing error)}的所有信息。因此，不要浪费任何时间，让我们继续前进。

什么是Windows 启动管理器^{(Windows Boot Manager)}( BOOTMGR )？

Windows 启动管理器 (BOOTMGR)^{(Windows Boot Manager (BOOTMGR))}加载卷启动代码，这对于启动Windows操作系统至关重要。Bootmgr还有助于执行 winload.exe，它反过来加载必要的设备驱动程序，以及ntoskrnl.exe，它是 Windows 的核心部分。

BOOTMGR帮助您的Windows 10、Windows 8、Windows 7 和Windows Vista操作系统启动。现在您可能已经注意到列表中缺少Windows XP ，这是因为^{(Windows XP)}Windows XP没有引导管理器^{(Boot Manager)}，而是具有NTLDR（NT 加载程序的缩写）。

现在您可能会看到不同形式的“ BOOTMGR is missing”错误：^(BOOTMGR)

1."BOOTMGR is missing Press Ctrl Alt Del to restart"
2."BOOTMGR is missing Press any key to restart" 
3."BOOTMGR image is corrupt. The system cannot boot."
4."Couldn't find BOOTMGR"

Windows 启动管理器位于^{(Windows Boot Manager Located)}哪里？

BOOTMGR是一个只读和隐藏文件，位于标记为活动分区的根目录内，通常是系统保留分区^{(System Reserved Partition)}，没有驱动器号。如果您没有系统保留分区^{(System Reserved Partition)}，则BOOTMGR位于您的 C: 驱动器上，这是一个主分区。

BOOTMGR 错误的原因：

1. Windows 引导扇区损坏、损坏或丢失。
2.硬盘问题 3.BIOS
问题4.Windows 操作系统问题5.BCD^(BIOS) （引导配置数据^{(Boot Configuration Data)}）损坏。

因此，不要浪费任何时间，让我们在下面列出的故障排除步骤的帮助下，看看Windows 10中缺少如何修复BOOTMGR 。

^{(Fix BOOTMGR)}修复Windows 10^{(Windows 10)}中缺少BOOTMGR

Important Disclaimer:

方法一：重启电脑^{(Method 1: Reboot your Computer)}

我们大多数人都知道这个非常基本的技巧。重新启动计算机可以修复软件冲突，这可能是Bootmgr丢失错误背后的原因。所以尝试重新启动，也许BOOTMGR错误会消失，您将能够启动到Windows。但如果这没有帮助，那么继续下一个方法。

方法 2：在 BIOS 中更改引导顺序（或引导顺序）^{(Method 2: Change Boot Sequence (or Boot Order) in BIOS)}

1. 重新启动您的 Windows 10 并访问 BIOS^{(access BIOS)}。

2. 当电脑开始开机时，按DEL 或 F2^{(DEL or F2)}键进入BIOS 设置^{(BIOS Setup)}。

3. 找到并导航到 BIOS 中的引导顺序选项^{(Boot Order Options)}。

4. 确保引导顺序^{(Boot Order)}设置为硬盘驱动器^{(Hard Drive)}，然后是 CD/DVD。

5. 否则将引导^(Boot)顺序更改为先从硬盘^{(Hard Drive)}引导，然后再从CD/DVD引导。

6、最后保存配置退出。

方法 3：运行自动修复^{(Method 3: Run Automatic Repair)}

1. 插入Windows 10可启动安装DVD并重新启动您的 PC。

2. 当提示Press any key to boot from CD or DVD时，按任意键继续。

3. 选择您的语言首选项，然后单击下一步^(Next)。单击左下角的修复计算机。^{(Click Repair)}

4. 在选择选项屏幕上，单击疑难解答^{(Troubleshoot)}。

5. 在疑难解答屏幕上，单击高级选项^{(Advanced option)}。

6. 在高级^(Advanced)选项屏幕上，单击自动修复或启动修复^{(Automatic Repair or Startup Repair)}。

7. 等到Windows Automatic/Startup Repairs完成。

8.重新启动^(Restart)，您已成功修复Windows 10中缺少BOOTMGR^{( fix BOOTMGR is missing in Windows 10)}，如果没有，请继续。

另外，请阅读 如何修复自动修复无法修复您的 PC：^{(How to fix Automatic Repair couldn’t repair your PC:)}

方法 4：修复启动并重建 BCD^{(Method 4: Fix boot and rebuild BCD)}

1. 放入Windows安装媒体或Recovery Drive/System Repair Disc并选择您的语言首选项， ^{(language preferences, )}然后单击下一步。

2. 单击底部的修复您的计算机。^(Repair)

3. 现在选择疑难解答^{(Troubleshoot)}，然后选择高级选项。^{(Advanced Options.)}

4. 从选项列表中选择命令提示符^{( Command Prompt)}（带网络）。

5.命令提示符^{(Command Prompt)}打开后，键入：C:并按 Enter。

注意：^(Note:)使用您的 Windows 驱动器号，^(Letter)然后按 Enter。

6.在命令^(Command)提示符中一一键入以下命令并按Enter：

bootrec /fixmbr bootrec /fixboot bootrec /rebuildbcd Chkdsk /f

7. 成功完成每个命令后，键入 exit。

8. 重新启动您的 PC 以查看您是否能够启动到Windows。

9. 如果您在上述任何方法中遇到错误，请尝试以下命令：

bootsect /ntfs60 C:将驱动器号替换为您的引导驱动器号）

10. 再次尝试之前失败的命令。

方法 5：使用 Diskpart 修复损坏的文件系统^{(Method 5: Use Diskpart to fix corrupted file system)}

1.再次^(Again)打开命令提示符^{(Command Prompt)}并输入：diskpart

2.现在一一键入这些命令并按Enter：

DiskPart
list disk 
select disk 0 
list partition 
select partition 1 
active 
exit

3. 现在输入以下命令并在每个命令后按回车键：

bootrec /fixmbr bootrec /fixboot bootrec /rebuildbcd Chkdsk /f

4.重新启动以应用更改，看看您是否能够修复 Windows 10 中缺少 BOOTMGR。^{(Fix BOOTMGR is missing in Windows 10.)}

方法 6：修复 Windows 映像^{(Method 6: Repair Windows Image)}

1. 打开命令提示符^{(Command Prompt)}并输入以下命令：

DISM /Online /Cleanup-Image /RestoreHealth

2.按回车键运行上述命令并等待该过程完成，通常需要15-20分钟。

注意：如果上述命令不起作用，请尝试以下命令：^{(NOTE: if the above command doesn’t work then try these commands: )}

Dism /Image:C:\offline /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows
Dism /Online /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows /LimitAccess

3.该过程完成后重新启动您的PC。

方法 7：检查您的硬件^{(Method 7: Check your Hardware)}

松动的硬件连接^{(Loose hardware connections)}也可能导致BOOTMGR is missing Error。您必须确保所有硬件组件均已正确连接。如果可能，拔下并重新安装组件并检查错误是否已解决。此外，如果错误仍然存​​在，请尝试找出特定硬件组件是否导致此错误。尝试用最少的硬件启动您的系统。如果这次没有出现错误，则可能是您卸下的某个硬件组件有问题。尝试为您的硬件运行诊断测试并立即更换任何有故障的硬件。^(Run)

方法8：修复安装Windows 10^{(Method 8: Repair Install Windows 10)}

如果上述解决方案都不适合您，那么您可以确定您的HDD没有问题，但您可能会看到错误“ ^(HDD)Windows 10错误中缺少 BOOTMGR ”，因为操作系统或HDD上的^(HDD)BCD信息以某种方式被删除了。好吧^(Well)，在这种情况下，您可以尝试修复安装 Windows ，但如果这也失败了，那么剩下的唯一解决方案就是安装^{(Repair install Windows)}Windows的新副本（全新安装^{(Clean Installation)}）。

为你推荐：^{(Recommended for you:)}

• 启动 Windows 10 时不显示系统图标^{(System icons do not appear when you start Windows 10)}
• 修复驱动程序电源状态故障 Windows 10^{(Fix Driver Power State Failure Windows 10)}
• 修复系统线程异常未处理错误 Windows 10^{(Fix System Thread Exception Not Handled Error Windows 10)}
• 如何修复自动修复无法修复您的电脑^{(How to fix Automatic Repair couldn’t repair your PC)}

就是这样，您已成功修复 Windows 10 中缺少 BOOTMGR 问题^{(Fix BOOTMGR is missing in Windows 10 issue)}。如果您对这篇文章仍有任何疑问，请随时在评论部分提出。

How to Fix BOOTMGR is missing in Windows 10

How to fix BOOTMGR is missing in Windows 10: “Bootmgr is missing Press Ctrl+Alt+Del to restart” is one of the most common boot error which occurs because the Windows boot sector is damaged or missing. Another reason you might encounter BOOTMGR error is if your PC is trying to boot from a drive that is not properly configured to be booted from. And in this guide, I’m going to tell you everything about “BOOTMGR” and how to fix Bootmgr is missing error. So without wasting any time let’s move forward.

What is the Windows Boot Manager (BOOTMGR)?

Windows Boot Manager (BOOTMGR) loads volume boot code which is essential for starting the Windows operating system. Bootmgr also helps to execute winload.exe, which in turn load essential device drivers, as well as ntoskrnl.exe which is a core part of Windows.

BOOTMGR helps your Windows 10, Windows 8, Windows 7, and Windows Vista operating system to start. Now you may have noticed that Windows XP is missing in the list that’s because Windows XP doesn’t have a Boot Manager instead, it has NTLDR (an abbreviation of NT loader).

Now you may see “BOOTMGR is missing” error in different forms:

1."BOOTMGR is missing Press Ctrl Alt Del to restart"
2."BOOTMGR is missing Press any key to restart" 
3."BOOTMGR image is corrupt. The system cannot boot."
4."Couldn't find BOOTMGR"

Where is Windows Boot Manager Located?

BOOTMGR is a read-only and hidden file that is located inside the root directory of partition marked as active which is generally a System Reserved Partition and does not have a drive letter. And if you don’t have a System Reserved Partition then BOOTMGR is located on your C: Drive which is a Primary Partition.

Causes of BOOTMGR Errors:

1. Windows boot sector is damaged, corrupted, or missing.
2.Hard Drive Problems
3.BIOS Problems
4.Windows Operating System issues
5.BCD (Boot Configuration Data) is damaged.

So without wasting any time let’s see How to fix BOOTMGR is missing in Windows 10 with the help of the below-listed troubleshooting steps.

Fix BOOTMGR is missing in Windows 10

Important Disclaimer:

Method 1: Reboot your Computer

Most of us know about this very basic trick. Rebooting your computer can fix software conflicts which might be the reason behind the Bootmgr missing error. So try to restart and maybe the BOOTMGR error will go away and you will be able to boot to Windows. But if this didn’t help then continue with the next method.

Method 2: Change Boot Sequence (or Boot Order) in BIOS

1. Restart your Windows 10 and access BIOS.

2. As the computer starts to power on press DEL or F2 key to enter BIOS Setup.

3. Locate and Navigate to the Boot Order Options in BIOS.

4. Make sure the Boot Order is set to Hard Drive and then CD/DVD.

5. Else change the Boot order to first boot from Hard Drive and then CD/DVD.

6. Finally, save the configuration and exit.

Method 3: Run Automatic Repair

1. Insert the Windows 10 bootable installation DVD and restart your PC.

2. When prompted to Press any key to boot from CD or DVD, press any key to continue.

3. Select your language preferences, and click Next. Click Repair your computer in the bottom-left.

4. On choose an option screen, click Troubleshoot.

5. On Troubleshoot screen, click Advanced option.

6. On Advanced options screen, click Automatic Repair or Startup Repair.

7. Wait till the Windows Automatic/Startup Repairs complete.

8. Restart and you have successfully fix BOOTMGR is missing in Windows 10, if not, continue.

Also, read How to fix Automatic Repair couldn’t repair your PC:

Method 4: Fix boot and rebuild BCD

1. Put in the Windows installation media or Recovery Drive/System Repair Disc and select your language preferences, and click Next.

2. Click Repair your computer at the bottom.

3. Now choose Troubleshoot and then Advanced Options.

4. Select Command Prompt (With networking) from the list of options.

5. Once the Command Prompt opens, type: C: and hit Enter.

Note: Use your Windows Drive Letter and then hit enter.

6. In Command prompt type the following commands one by one & hit enter:

bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd
Chkdsk /f

7. After completing each command successfully type exit.

8. Restart your PC to see if you are able to boot to Windows.

9. If you get an error in any above method then try this command:

bootsect /ntfs60 C: (replace the drive letter with your boot drive letter)

10. Again try the commands which failed earlier.

Method 5: Use Diskpart to fix corrupted file system

1. Again open Command Prompt and type: diskpart

2. Now type these commands one by one and hit Enter:

DiskPart
list disk 
select disk 0 
list partition 
select partition 1 
active 
exit

3. Now type the following command and hit enter after each one:

bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd
Chkdsk /f

4. Restart to apply changes and see if you’re able to Fix BOOTMGR is missing in Windows 10.

Method 6: Repair Windows Image

1. Open Command Prompt and enter the following command:

DISM /Online /Cleanup-Image /RestoreHealth

2. Press enter to run the above command and wait for the process to complete, usually, it takes 15-20 minutes.

NOTE: if the above command doesn’t work then try these commands:

Dism /Image:C:\offline /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows
Dism /Online /Cleanup-Image /RestoreHealth /Source:c:\test\mount\windows /LimitAccess

3. After the process is completed restart your PC.

Method 7: Check your Hardware

Loose hardware connections could also cause BOOTMGR is missing Error. You must ensure that all hardware components are connected properly. If possible, unplug and reseat the components and check if the error has been resolved. Further, if the error persists, try to find out if a particular hardware component is causing this error. Try booting your system with minimum hardware. If the error does not appear this time, there might be a problem with one of the hardware components that you have removed. Try to Run diagnostic tests for your hardware and replace any faulty hardware immediately.

Method 8: Repair Install Windows 10

If none of the above solutions work for you then you can be sure that your HDD is fine but you may be seeing the error “BOOTMGR is missing in Windows 10 Error” because the operating system or the BCD information on the HDD was somehow erased. Well, in this case, you can try to Repair install Windows but if this also fails then the only solution left is to install a new copy of Windows (Clean Installation).

Recommended for you:

• System icons do not appear when you start Windows 10
• Fix Driver Power State Failure Windows 10
• Fix System Thread Exception Not Handled Error Windows 10
• How to fix Automatic Repair couldn’t repair your PC

That’s it you have successfully Fix BOOTMGR is missing in Windows 10 issue. If you still have any questions regarding this post feel free to ask them in the comment section.

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