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windows 7 bootmgr is missing-- resolved using WinRE

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

Answer
Answer

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.

Visit our Microsoft Answers Feedback Forum and let us know what you think.

 

 

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Question Info

Last updated July 31, 2023 Views 948,465 Applies to: