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Windows 7: Win 7 boot problem

09 Feb 2012   #11

Windows 7 Home 64
Worked for me...

Boot Windows CD/DVD.
From System Recovery options -> Command Prompt:

bootsect /nt60 all /force /mbr
bcdboot c:\windows

Boyans' solution worked for the problem I had. I vainly deleted my system partition (D:/) which was separate from the windows installation (C:/). When Windows wouldn't start, I ran startup repair from my installation CD. The CD at first detected problems (and possibly fixed them?) but Windows still wouldn't start. From then on, I ran startup repair a couple more times and it did not detect any issues and still Windows would not boot. Then I followed the two commands, restarted, and everything has worked fine.

My System SpecsSystem Spec
09 Feb 2012   #12
Microsoft MVP


You must mark the target partition Active before running Startup Repair to automatically repair Win7 boot.

Partition - Mark as Active (Method Two)
Startup Repair - Run 3 Separate Times
My System SpecsSystem Spec
10 Feb 2012   #13

windows 7

I made a recovery USB key bootable.
I then tried the 2 suggested commands:
1) bootsect /nt60 all /force /mbr
it succeeded (successfully updated FAT 32 filesystem bootcode and successfully updated disk bootcode)
2) bcdboot c:\windows
"échec lors de la tentative de copie de fichiers de démarrage" in french, so the message in english should be something like "fail in copying boot files"

Then, I was not able to boot with the USB key anymore !
There was a "Windows Boot Manager" screen, showing "Windows failed to start" ... "\Boot\BCD" ... "status 0xc000000f"
Thank you for your help, I would really appreciate not to reinstall Win 7 if possible.

P.S. I am running Win 7 32 bits
My System SpecsSystem Spec

10 Feb 2012   #14
Microsoft MVP


Write the Win7 installer ISO to flash stick using Universal USB Installer with Win7 in dropdown menu. Boot to try repairs, or copy out data to clean reinstall.

Follow these steps: Windows 7 fails to boot

Others have had success writing Repair ISO to flash stick using Win2Flash.

I ask you again: What is the licensed version on your COA sticker.
My System SpecsSystem Spec
10 Feb 2012   #15

windows 7

I got a Win 7 DVD here at work so I will try it at home later this weekend.
I will also check with UCB the C: drive because I have a doubt now, it could be a Win 7 64 bits (I don't use this computer very often).
The COA sticker is not really helping as this computer was originally installed with Windows Vista.
Thanks again for your help.
My System SpecsSystem Spec
10 Feb 2012   #16
Microsoft MVP


Then how are you activating Win7?
My System SpecsSystem Spec
10 Feb 2012   #17

Win 8 RP, Win 7, XP
Delete bootmgr and BCD

2) bcdboot c:\windows
"échec lors de la tentative de copie de fichiers de démarrage" in french, so the message in english should be something like "fail in copying boot files"
The command can fail for several reasons:
1. The files in \boot directory and bootmgr are newer than the source (protected Windows 7 system files).
2. Wrong source specified. (source root should be \Windows directory of installed system !)

Solution: on command line in recovery, root of system drive is selected by drive_letter e.g "c:" or "d:" or.....(=drive_letter of active partition)

attrib -r -s -h bootmgr
del bootmgr
attrib -s -h \boot\BCD
del \boot\BCD

Commands delete bootmgr and BCD store (this will permanently delete any dual or multi boot settings in BCD !).
Later bcdboot command will recreate bootmgr and BCD (assuming Windows system file sources are intact).

It is important that the Windows 7 version installed and the
Recovery CD/DVD used have the same bit size 32-bit or 64-bit !!

After a major update of Windows 7 e.g. SP1 it is good to create a new version of Recovery CD/DVD:
in Windows 7 -> Start -> Run -> type "Create System Repair Disk" and run,
a form pops up with destionation DVD/CD drive, insert blank disk and burn.
My System SpecsSystem Spec
11 Feb 2012   #18

Windows 7 Ultimate x64

First I have the 100mb System Reserved partition and after reading this thread I decided to format it (after creating a image) to see what I could do.

After formatting I booted from the Win 7 DVD and ran two commands and I was able to boot Windows again. The commands were

bootsect /nt60 C: /mbr
bcdboot I:\windows /s C:

First I checked what drive letter my 100mb partition had, which was C:, then I checked what the drive letter Windows was installed to which was I:. ( I used notepad ran from the cmd prompt and went ctrl+O or File -> Open for a quick way to view my drives.)

/s Specifies an optional volume letter parameter to designate
the target system partition where boot environment files are
copied. The default is the system partition identified by
the firmware

Hope this helps.
My System SpecsSystem Spec
11 Feb 2012   #19

windows 7

To Boyans:
I think the problem is that I have no access to "C:" drive.
In recovery mode, the command prompt is showing "X:"
My System SpecsSystem Spec
11 Feb 2012   #20

windows 7

To gregrocker:

Are you working for Microsoft ? ;-)
The key is written on the CD but I still didn't find it.

My System SpecsSystem Spec

 Win 7 boot problem

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