Did this issue happen after a sudden shutdown, installing new hardware, or updating software?
In a standard Windows 7 setup, the bootmgr file is a read-only, hidden system file. It is typically found on the (a small, hidden partition created during Windows installation) or, if that partition doesn't exist, on the root directory of your system drive (usually C:\ ). Because it's hidden by default, you won't see it when browsing your files, which is why you can't just find and copy it from your working computer like a normal document.
Only get BOOTMGR from a genuine Windows 7 installation DVD, a Microsoft-created USB tool, or a trusted ISO from Microsoft’s software recovery website. windows 7 bootmgr download
If your boot configuration database is corrupted or your partition configuration is wrong, simply pasting a new BOOTMGR file into a folder will not fix the problem. Safe Methods to Fix "BOOTMGR is Missing" in Windows 7
Here is the most important question: can you simply download the bootmgr file from the internet? The direct answer is . You cannot find a legitimate, trustworthy download for the isolated bootmgr file from Microsoft or any other official source. The file is a core component of the Windows operating system and is protected. Did this issue happen after a sudden shutdown,
Restart your computer to see if the issue is resolved.
If you are experiencing Bootmgr issues in Windows 7, here are the steps to download and fix the problem: Because it's hidden by default, you won't see
Select from the list of system recovery options.
Malware can deliberately target or delete boot files to disable your operating system.
Type the following commands one by one, pressing after each: bootrec /fixmbr bootrec /fixboot bootrec /rebuildbcd Use code with caution.