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Bootmgr Error could be something like "cannot load bootmgr" error when starting a computer, It may have been caused from a computer virus and you may need virus removal, Or it could be caused from something else, you can try booting from the recovery CD however if you get the same error, you need to dig deeper. There could be many reasons for this error. We will look at one possible solution that may help you to fix the error. This is probably the worst case scenario, this computer would not boot from anything except the vista recovery disk

Bootmgr Error could be something like "cannot load bootmgr" error when starting a computer, It may have been caused from a computer virus and you may need virus removal, Or it could be caused from something else, you can try booting from the recovery CD however if you get the same error, you need to dig deeper. There could be many reasons for this error. We will look at one possible solution that may help you to fix the error. This is probably the worst case scenario, this computer would not boot from anything except the vista recovery disk

This is a Dell laptop. This can happen if you wipe the C partition of you computer or if the files are damaged or corrupted somehow. This was the case today when a customer brought in the dell laptop, he had tried to reload the OS.

I had no clue from the customer what had happened with the laptop and I was not able to boot in any mode, (safemode or normal) the only thing on the screen was the bootmgr error message. I figured I would try my Bart PE disk (bootable CD with its own operating system) Well I was able to boot from the Bart PE boot disk and examine the hard disk drive. I could noticed that recovery partition was still intact.

Within the recovery partition was a number of folders. Inside the Tools folder was a exe file named PCRestore. Imagex.exe was in another location on in the recovery partition there was also another folder or sub folder that contained an image file named factory.wim Once all this was located I wrote down the path to the Imagex.exe program and the location of the image file.

First I closed the file viewing program that I was running in the Bart PE OS and opened a command prompt window.
I navigated to the folder location that contained the Imagex.exe file and typed out the command, for Imagex.exe

to apply the image to the C partition of the hard drive, about 15 minutes later the computer was restored to factory condition. The command was somthing like this, imagex /apply d:dell/Image/Factory.wim 1 c: d:dell/Image/ is be the path to the image file Factory.wim is the name of the image file 1 means the first image
c: is the location to apply the image, being the boot partition for the laptop

In this particular case that was all I needed to do, hope that may help others.