windows 7 bootmgr is missing-- resolved using WinRE

Anonymous
2010-01-09T01:16:11+00:00

original title: windows 7 bootmgr is missing HELP!!!!!!!!!!!!!!!!!!!!!

i have a sony vaio laptop with no partitions no nothing just a hard disk with pre-installed windows 7 64 bit home premium. Yesterday i has installing some widgets to my desktop and after i have restarted the laptop windows coudn't start....it says bootmgr is missing. I tryied to use the recovery tools of vaio but the only option is toformat everything and install again windows 7 but i dont want this option. I have tried almost everything finding on net many answers about this problem but none of them it worked to me. I downloaded a bootable disk to repair the windows i tryied to do it manually from the prompt command but nothing....Its very strange though when i open the vaio recovery tools i can save all my files to an external drive but it appears a partition d: which before didnt exist

and have one folder called boot and inside contains a file called bootmgr. I would like if somebody have any idea what to do cause i have this laptop 1 month it it drives me crazy when i am thinking that i need to format everything

thanks

Windows for home | Previous Windows versions | Windows update

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Anonymous
2010-01-09T23:10:37+00:00

Hi darofossss,

Perform the following methods to resolve the issue: 

Method 1: Startup Repair from the Windows Recovery Environment (WinRE)

============================================

  1. Insert the Windows 7 installation disc into the disc drive, and then start the computer. 
  2. Press a key when the message indicating "Press any key to boot from CD or DVD …". appears.
  3. Select a language, a time and currency, and a keyboard or input method, and then click Next.
  4. Click Repair your computer. 
  5. In the System Recovery Options dialog box, choose the drive of your Windows installation and click Next. 
  6. At the System Recovery Options Dialog Box, click on Repair your computer.
  7. Click the operating system that you want to repair, and then click Next.
  8. In the System Recovery Options dialog box, click Startup Repair.

Refer the following link for more information:

http://windows.microsoft.com/en-US/windows7/What-are-the-system-recovery-options-in-Windows-7

To know more about “Startup Repair” visit the following link:

http://windows.microsoft.com/en-us/windows7/Startup-Repair-frequently-asked-questions

Method 2: Rebuild BCD using the Bootrec.exe tool

============================================

To run the Bootrec.exe tool, you must start Windows RE. To do this, follow these steps:

  1. Put the Windows Vista or Windows 7 installation disc in the disc drive, and then start the computer.
  2. Press a key when you are prompted. Select a language, a time, a currency, a keyboard or an input method, and then click Next.
  3. Click Repair your computer.
  4. Click the operating system that you want to repair, and then click Next.
  5. In the System Recovery Options dialog box, click Command Prompt.
  6. Type Bootrec.exe, and then press ENTER.

Refer the following link for more information:

How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows

http://support.microsoft.com/kb/927392

Method 3: Use the Windows Recovery Environment (WinRE) to run System Restore

============================================

  1. Insert the Windows 7 installation disc into the disc drive, and then start the computer. 
  2. Press a key when the message indicating "Press any key to boot from CD or DVD …". appears.
  3. Select a language, a time and currency, and a keyboard or input method, and then click Next. 
  4. Click Repair your computer. 
  5. In the System Recovery Options dialog box, choose the drive of your Windows installation and click Next
  6. At the System Recovery Options Dialog Box, click on System Restore.
  7. Follow the System Restore Wizard instruction as usual and choose the appropriate restore point.
  8. Click Finish to restore the system.

To know more about “System Restore” visit the following link:

http://windows.microsoft.com/en-us/windows7/System-Restore-frequently-asked-questions

If the above methods do not help, you may try to follow the methods mentioned in this article:

Error message when you start Windows Vista: "The Windows Boot Configuration Data file is missing required information"

http://support.microsoft.com/kb/927391

Note: This article also applies to Windows 7 Operating system as well.

Regards,

Divya R – Microsoft Support.

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  1. Anonymous
    2013-02-16T13:35:30+00:00

    No external drives.  1 internal hard drive.

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  2. Anonymous
    2013-02-15T12:26:00+00:00

    Make sure your computer has no external drives attached.!

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  3. Anonymous
    2013-02-15T11:47:35+00:00

    Hi,

    I'm in this situation as a result of attempting to revert a desktop system back to Win7U from Win8.  I had made an Acronis image of the system immediately before upgrading to Win8.  Upon restore of that image, I get the missing BootMgr message.

    When I boot from the Win7U media and choose repair, it makes an immediate repair and says a reboot is required.   The second reboot it correctly identifies my Win7U, but then the repair says that it is "not compatible with this version of windows" and to choose different media.

    I managed to get to the command prompt and applied the bootrec.exe procedure.   But /scanos doesn't find any installations.   What is end result of this process?   Does it rewrite boot.ini or something else I can recreate manually?

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  4. Anonymous
    2012-12-21T22:25:01+00:00

    Worked for me just now.

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