How to fix 'bootmgr is missing” error in Windows

How to solve the problem of Windows bootmgr file loss

With the rapid development of modern technology, computers play an important role in people's daily lives. However, you may encounter various problems when using your computer, one of the common problems is the "bootmgr is missing" error message. This error message means that the computer cannot find the boot manager file bootmgr and cannot start the system correctly. We don’t need to panic when encountering this problem. Here are several ways to solve this problem.

First, we can try to use the Windows installation CD to repair the boot. If you have a Windows installation CD, insert the CD into your computer's CD-ROM drive and start your computer. During the startup process, you need to press the designated key to enter the computer's "BIOS Setup" or "Boot Menu". Change the order of boot devices so that the computer boots from the CD first. Then select the "Repair your computer" option and select "Startup Repair" in the system recovery environment. This method will automatically repair startup files and restore the computer's startup functionality.

Secondly, we can use the Windows Repair Environment command line tool to repair startup. Similarly, press the designated key during the startup process to enter the computer's "BIOS Setup" or "Boot Menu". Change the order of boot devices so that the computer boots from the CD first. Select the "Repair your computer" option and select "Command Prompt" in the system recovery environment. In the command prompt window, enter the following commands: bootrec.exe /fixmbr, bootrec.exe /fixboot, and bootrec.exe /rebuildbcd. These commands will repair the boot manager and rebuild the boot configuration data.

The third method is to use a third-party startup repair tool. Some third-party software provides specialized startup repair functions that can help us solve the problem of bootmgr file loss. You can search for and download these tools on the Internet and then follow the guidance provided by the software. Please note that before using third-party tools, make sure you download the software from a trustworthy source and back up important data to prevent data loss.

Finally, if none of the above methods solve the problem, the bootmgr file may be lost due to hardware failure. At this time, it is recommended that you contact a professional computer repair technician for inspection and repair.

To sum up, when the "bootmgr is missing" error message appears, we can try to use the Windows installation CD to repair the startup, use the Windows Repair Environment command line tool to repair the startup, or use a third-party startup repair tool . If the problem persists, it is recommended to contact professional technicians for further diagnosis and repair. With the right methods and suitable tools, we can solve the problem of bootmgr file loss and get our computer back to normal operation.

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