This is a well-known bug among users of the Microsoft operating system. That indicates that the Windows BootMgr is Missing or corrupted. The boot sector is an essential piece of software for the operating system to start properly. And the one in charge of executing the Winload.exe process. Which is the one that loads essential device drivers and a part of the Windows kernel. An error that affects essential parts of the system and that we are going to show how to solve it.
The lack of Bootmgr is an error that can occur on any computer. That has a version of Windows that is later than Windows Vista. And that can be displayed in different ways, with a message indicating “ Bootmgr is missing, press Ctrl + Alt + Del to restart “,” Bootmgr is missing, press any key to restart “ or simply ” Could not find Bootmgr “.
What to do if the BootMgr is Missing
Despite the fact that the principal message recognizes widely. Regardless it is a similar mistake. It tends to be brought about by a few issues and we can attempt to solve them in the same way. Among the main causes of the Windows Bootmgr missing error. We can find some damaged or misconfigured files, problems in the BIOS or UEFI. Disabled disk partitions, poorly connected, or loose hardware interface cables. Hard disk failures, updates to the system, or that we are trying to boot the system from a unit that is not configured for it.
To solve this problem of Missing Bootmgr, the first thing we can do is restart the computer. Something that could solve this error easily and quickly. If it is only something specific that a simple restart can solve. But if restarting everything remains the same, then we must proceed to carry out other types of checks.
The next, for example, should be to check if we have a DVD or USB memory connected. And the computer may be configured to give priority to these drives. At boot time instead of the hard disk. This would cause it to search the DVD or memory connected to the computer. For the boot system and, of course, not find it.
It can likewise happen that a link is free and the PC doesn’t perceive our hard drive. To check if this is the problem. We must open the case of our computer, as long as it is off. And disconnected from the electrical network. And verify if all the cables that connect the disk with the motherboard are correctly connected.
If we continue with the Bootmgr Missing error, then we will have to run the Windows Recovery Environment (WinRE) startup repair. This will require inserting an installation disk or boot drive, however, the system may or may not automatically detect the media.
If the PC detects them correctly everything is fine, but if it does not automatically detect the media then we must access the BIOS or UEFI of the computer, look for the section that allows us to change the boot order, which will vary depending on the manufacturer, indicate the unit We want it to be the first in which it looks for the system’s boot system, save the changes and exit the BIOS or UEFI again.
Next, the Windows Recovery Environment startup repair process will ask us to select a language, a time, currency, and a keyboard or input method, click on Next and click on Repair the computer. In the System Recovery Options dialog box, select the Windows installation drive and click Next again.
Now we will have two options, Repair the system or computer and Startup Repair whose processes will try to restore the damaged or lost BootMgr files and try to solve the system startup problems.
If we still continue with the BootMgr Missing problem, the next thing we can do is recompile the boot configuration data (BCD) from the Windows Recovery Environment (RE) if we do not have a backup copy of the BCD. To do this, again we need the installation disk or Windows boot drive and follow the same steps that we have just mentioned to execute the startup repair of the Windows Recovery Environment (WinRE) until in the System Recovery Options we select the Command Prompt option.
To rebuild the boot configuration data from the command line prompt, the first thing we are going to do is launch the bootrec / rebuildbcd command. This will scan all drives for Windows installations, so it may take several minutes. If Bootrec finds a Windows installation, it will ask us if we want to add it to the startup list or not.
After running the process, we can also launch the command bootrec / fixboot, which writes a new boot sector of the system partition, or bootrec / fixmbr , which writes a master boot record (MBR) without overwriting the partition table. to know more click here.
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