windows 7 bootmgr is missing-- resolved using WinRE

Question

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 1

Hi darofossss,

Perform the following methods to resolve the issue: 

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

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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.

Answer 2

Absolute legend.

Thanks!

Answer 3

I am having the same BOOTMGR is missing problem.  I have read through the threads and used the Recover Disk and Partition suggestions and no success.  I've used the system recover disk options and tools more then once.  The 1st time I did this, the system indicated that the bootmgr was corrupt and was "fixed".  In latter attempts to use the Startup Repair tool, the system does not indicate there are any errors.   However every time I restart, the BOOTMGR error is still there.  Very frustrating.

The computer is a Toshiba.  And did not come with a Windows 7 Disk.

Rob

Answer 4

Hi,

Check Toshiba Support, their on-line documentation, diagnostics, and ask in their forums

about any known issues.

Toshiba - Forums

http://laptopforums.toshiba.com/

Toshiba - Contacts

http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/navShell.jsp?cf=su\_contact

Toshiba - Drivers - navigate to your model

http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/home.jsp?nav=Download

Toshiba - Support

http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/home.jsp

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References to Vista also apply to Windows 7.

See if these help - boot with a Windows disk (repair disk ok) and issue these from the Command

Prompt and hit ENTER after each.

Setup/Setting (BIOS/CMOS) often F2 as you boot so watch the screen - set to CD/DVD drive first

in the boot order - remember to set back when done. (Some use F12 or other keys for a one time

boot order change.)

C:

bootrec /fixmbr

bootrec /fixboot

bootrec /scanos

bootrec /rebuildbcd

How to repair MBR on Windows 7

http://www.ehow.com/how\_4836283\_repair-mbr-windows.html

How To: Repair And Restore Windows Vista Master Boot Record (MBR)

http://www.tomstricks.com/how-to-repair-and-restore-windows-vista-master-boot-record-mbr/

This KB tells how to use /FixMbr and /FixBoot and other options

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

startup issues in Windows. This also applied to Windows 7

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

If those help then run StartUp Repair THREE times - run once and then reboot and run again- repeat. (Use a Windows 7 disk.)

---

Using EasyBCD often works when other methods do not. <-- if Bootrec did not help use this.

Recovering the Vista or Windows 7 Bootloader from the DVD

http://neosmart.net/wiki/display/EBCD/Recovering+the+Vista+Bootloader+from+the+DVD

Recovering the Vista Bootloader with EasyBCD (Windows 7)

http://neosmart.net/wiki/display/EBCD/Recovering+the+Vista+Bootloader+with+EasyBCD

Repairing the Windows Vista Bootloader (Windows 7)

http://neosmart.net/wiki/display/EBCD/Repairing+the+Windows+Vista+Bootloader

If those help then run StartUp Repair THREE times - run once and then reboot and run again- repeat. (Use a Winodows 7 disk.)

How to Run a Startup Repair in Windows 7

http://www.sevenforums.com/tutorials/681-startup-repair.html

---

**If you need to make repair disks - these help repair Windows not re-install.**Often these disks will help when the OEM Recovery Disk does not.

Download Windows 7 System Recovery Discs - now charging $9.75 for the ISO

images to make the disks. (These can be made on any computer running XP,

Vista, or Window 7 that has a CD/DVD burner.)

http://neosmart.net/blog/2009/windows-7-system-repair-discs/

How to Create a Windows 7 System Repair Disc - Free (Must be made on a

Windows 7 computer running the same 32 or 64 bit.)

http://www.sevenforums.com/tutorials/2083-system-repair-disc-create.html

**A Installation Disk can also be made to use for Repair. Of course you would use your ownCOA (Product Key).**Windows 7 (English) with Service Pack 1

• Windows 7 Home Premium (x86) - X17-58996

• Windows 7 Home Premium (x64) - X17-58997

• Windows 7 Professional (x86) - X17-59183

• Windows 7 Professional (x64) - X17-59186

• Windows 7 Ultimate (x86)* - X17-59463

• Windows 7 Ultimate (x64)* - X17-59465

See MVP Andre Da Costa's message in this thread.

http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_install/how-can-i-download-gatewaywindows7recovery-disc/3c0ecd74-cfc1-4188-89c7-a6bbe8113ee1

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

If needed :

What to do if Windows won't start correctly

http://windows.microsoft.com/en-us/windows-vista/What-to-do-if-Windows-wont-start-correctly 

How to Boot to the System Recovery Options in Windows 7

http://www.sevenforums.com/tutorials/668-system-recovery-options.html

What are the system recovery options in Windows 7?

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

A Repair Installation allows you to keep the programs and data though redundant backups

are always a good idea.

How to Do a Repair Install to Fix Windows 7

http://www.sevenforums.com/tutorials/3413-repair-install.html

Hope this helps.

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Rob Brown - Microsoft MVP <- profile - Windows Expert - Consumer : Bicycle - Mark Twain said it right.

Answer 5

Do this harms the software, programs or drivers installed?

Because I have a Acer Laptop with 7 Starter OS and has all Acer Features