Select your hard drive where Windows is installed and press Enter.Use the arrow keys to highlight Boot Option #1 and press Enter.The boot sector or MBR on your system may be damaged or missing. You are trying to boot the computer from the external USB flash drive and there is no BOOTMGR file on that device. In BIOS, head to the Boot tab using the arrow keys. There are several reasons listed below for these BOOTMGR errors: 1.Check your PC manufacturer’s website if this button combination doesn’t work for you. In most PCs, you can press and hold the F2 key and then press the Power button to do so.

To fix this, change the boot order in your computer’s BIOS and set your primary drive as first in the boot order by following the steps below: 2) if the boot folder & bootmgr.exe are not on the boot HD, Startup repair can not do any repairs. 1) Startup repair will mark a partition active. The “Bootmgr is missing” error can also occur if the PC is not booting from the primary hard drive but instead from an additional drive that doesn’t have the required files to boot the computer. theog - Startup Repair should write the boot critical files to any partition marked Active if they are not there. If you have multiple hard drives, read the next solution below. By default, most computers are setup to boot from a CD/DVD drive and a USB drive before booting from the primary hard drive. that could possibly be confusing your computer by making it think it’s a bootable device when it’s really not. At the Recovery Manager screen, select Microsoft Startup Repair tool (again) and wait for startup repair to find and fix errors.

Go ahead and eject any USB drives, CDs, DVDs, Blu-ray discs, etc.

Bootmgr is missing windows 7 install