If you don’t want to create a Windows 7 recovery USB drive, you can turn to a free third party tool – AOMEI Partition Assistant Standard to fix MBR on the hard drive. When the error appears as the partition where BOOTMGR locates is not set as Active, access Command Prompt and execute the commands below to fix it: ✔ Active the partition where BOOTMGR locates In System Recovery Options window, click “ Command Prompt” and run the following commands: Boot the computer from the USB and enter System Recovery Optionswindow.ģ. Insert the recovery USB drive to the computerĢ. If “BOOTMGR is missing” error is related with boot sector, MBR, BCD file, you can try to fix Windows 7 from Command Prompt. ✔ Repair boot sector or MBR… from Command Prompt After running Startup Repair, remove the Windows 7 recovery USB drive, reboot computer and enter BIOS to boot from the repaired hard drive to check if the problem is solved. The whole process might spend much time, please wait painterly and do no abort it. In the System Recovery Options window, click “ Startup Repair”. Insert the recovery USB drive to the computer with BOOTMGR is missing error.Ģ.Enter BIOS to boot the computer from your USB drive, so that you can access System Recovery Options window.ģ. ✔ Run Startup Repair to fix Windows 7 boot failureĪfter creating Windows 7 recovery USB drive successfully, you can run Startup Repair to fix Windows 7 automatically. If you are with Windows Installation CD/DVD, you can choose to fix BOOTMGR is missing with the CD/DVD and do not create Windows 7 recovery US drive. You’d better back up important files on it before the operation. Your USB will be formatted during this process. When the whole process finishes, you can gain a recovery USB drive. Insert your USB drive to the computer, select it and click “ Begin copying”.Ĥ.
Run Windows 7 USB DVD Download Tool on a working computer click “ Browse” to choose your source file. To make Windows 7 recovery USB drive, you should prepare an ISO image file, USB drive, and Windows 7 USB/DVD Download Tool. If this error still appears, you can try to fix it with Windows 7 recovery USB drive or bootable USB drive. To fix such an error, you can reboot computer, disconnect all external devices, enter BIOS to ensure that you boot from the right device and upgrade BIOS version at first. How to fix “BOOTMGR is missing” with USB? The error aforementioned occurs can be a result of various reasons like corrupted MBR, wrong boot order or outdated BIOS, etc. What should I do? Is there any advice?” Why “BOOTMGR is missing” occurs to Windows 7?īOOTMGR is a file named Windows BOOT Manager, which runs when you boot your computer. However, suddenly it prompts me that BOOTMGR is missing Press Crtl+ALT+Del to restart.
“I have a laptop that running Windows 7 and it always works well.
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