Bootmgr is missing - Fix

How to Fix the "Bootmgr is missing" Error in Windows​

You may get this error while booting your computer.

   Information

This problem is not hardware related and can be fixed with a Windows 7 DVD OR a system repair disc.

Here's How:

NOTE: Sometimes it may take running a startup repair a few times before it fully fixes the startup issue.

1. Boot to the System Recovery Options screen.

2. Select the Startup Repair option. (See screenshot below)

3. Now click on Startup Repair. Run the startup repair and it will attempt to fix this issue.

NOTE: It will ask you to reboot your system. Reboot to see if it works. If it doesn't work, follow step 4.


4. Click on Command Prompt.
A) Type c: and press <Enter>.

   Note

C:\ is the drive letter where Windows 7 is installed. You may replace it with whatever drive letter you want where you have installed Windows 7.

B) At the C:\ prompt, type cd boot and press <Enter>.

C) At the C:\Boot prompt, type the following commands and press Enter after each command.

[B]bootrec /FixMbr[/B]
[B]bootrec /FixBoot[/B]
[B]bootrec /RebuildBcd[/B]

D) Now close the command prompt, remove the DVD and reboot your computer.
That's it,
Dinesh.

Related Tutorials

---

• How to Run a Startup Repair in Windows 7
• How to Use the Bootrec.exe Tool in Windows Recovery Environment
• How to Restore the Windows 7 MBR (Master Boot Record)
• How to Mark a Partition as Active in Windows 7

 

[Big Dawg]

I already tried that, but it didn't find Windows 7 installation on the new hard drive, this is why I was trying to do it manually.
If I boot with my regular boot drive, I can use Explorer and see the contents of the new hard drive with Win7 on it, I just can't boot with this new drive.

 

[derekimo]

I already tried that, but it didn't find Windows 7 installation on the new hard drive, this is why I was trying to do it manually.
If I boot with my regular boot drive, I can use Explorer and see the contents of the new hard drive with Win7 on it, I just can boot with this new drive.

Can you post a screenshot of your Disk Management screen for us please,

http://www.sevenforums.com/tutorials/274797-disk-management-post-screen-capture-image.html

 

[Big Dawg]

Here it is with my current drives attached to my computer. The new Win7 drive that will not boot is NOT attached to the computer in this screen shot.

 

[kesepian]

Hello!
If my broken Windows 7 is the Home Premium, can I use the Windows Ultimate DVD to acces the System Recovery Options screen in order to fix BOOTMGR is missing?

 

[Brink]

Hello Kesepian,

As long as the Windows Ultimate DVD is the same 32-bit or 64-bit that you have installed, then yes you could.

 

[mothaskeet]

I already tried that, but it didn't find Windows 7 installation on the new hard drive, this is why I was trying to do it manually.
If I boot with my regular boot drive, I can use Explorer and see the contents of the new hard drive with Win7 on it, I just can't boot with this new drive.

Have you looked at msconfig? Click start, type msconfig and check your boot tab.

 

[sdean7855]

When the Fix steps work, but the RebuildBcd fails like this

I'm working on a friends sony vaio with this issue and I'm getting this error... (updating)

I found that the problem was that if the hard drive where you're reconstructing the MBR isn't listed in the BIOS Boot list (in the BIOS screens) then the RebuildBcd fails as happened with otakucho...you get that "Requested system device cannot be found message" Once I entered the drive that I wanted the MBR rebuilt on in the BIOS boot list, I could successfully do the RebuilBcd step.

 

[rools]

hi guys, I really need your help.
I got a big virus. My laptop went from crashing in the middle of a video to not booting up at all in the space of 5 hours I tried reinstalling windows with the DVD after trying to repair so many times without sucess but the installation stopped at a third of the way going to a blue error screen. I got very frustrated and did something stupid : I formatted every partitions, including the boot partition.
I looked online for solution and was told to make a bootable USB, change the boot priority and to enter the command you mention. If i don't enter the command, same as the DVD, the installation will stop and tell me an error ocured. If I enter the command, exit and restart, I am then stock with a black screen and a white dot on the top left corner. What should I do? Sorry for the grammar, I am French.

 

[Dinesh]

Does it allow you to boot from Win7 DVD and re-install windows?
At what stage do you experience an issue while attempting to reinstall the OS?

 

[rools]

I can boot from the windows DVD but the installation process never goes pass 40% of the "expanding windows files" step (second step).
it then says "windows cannot install required files. The file may be corrupt or missing. Make sure all files required for installation are available, and restart the installation.
error code: 0x80070570".
the DVD is clean and was used not so long ago for a windows reinstallation without any problem.
I made a bootable USB with the DVD, it goes faster but same results.
if I enter the bootrec or bootsec commands before the install without restarting, nothing changes.
if I restart after entering the codes it give me a black screen with a white dot (top left corner)
and sometimes all I get is a blue screen saying it went to this state to prevent harm to the computer and showing a bunch off error code

 

[Dinesh]

Change the installation DVD.
If it still doesnt work then try running a test on your hard drive. It could be faulty.

And if nothing works, then install Ubuntu using a bootable USB stick or a DVD. Once done, then delete and format all the partitions and re-install Windows 7.

 

[rools]

ok thanks I will try all that and post the results.

 

[isaura]

I think I have my windows on drive e:, but there isn't folder "boot". I tried fixing boot sectors, for all the others it seemed to work, drive e: the access was denied. If I tried to use those cmd commands for c: but it found 0 Windows installed.
Any ideas what to do now?
Cheers!

 

[bensch]

And if it won't work then?

Dinesh, things were going along swimmingly for several months, with absolutely no problems. Last week, probably at new year's, when I booted up it said there was issue with the E drive (I think it is a partition of the C drive). It has done this several times (going thru check disk), and this time, rather than go thru a silly exercise, I just booted up, and then, after seeing that nothing was on the E drive, formatted it. The next time I tried to reboot, several days later, it wouldn't, and I got various errors: missing MBR, missing boot mgr, the system you are trying to restore is incompatible with the disc you are using (the original Win 7 disc, btw). I found my way to this site, and tried your method. the first time I used the command prompt, I switched to C:, but couldn't change the directory to anything (system cannot find the drive specified). The next time I tried to go to C: from the x:\sources, it couldn't find the C: drive. The system is not a RAID, and the last time it worked (after formatting the E drive), I could not find a specific folder.

Sadly, this is not the first time this has happened, and after wasting a lot of time trying to repair it, I reinstalled Windows. I am truly disgusted with Microsoft, but more so with the late Steve Jobs, who thru his actions, allowed this monstrosity to be inflicted upon us. Do you have any other ideas, or do I just get the information off the hard drive and redo things. And at that point, how often should I expect to do it? thanks.

 

[robinjhood]

dosent work

it dosent accept the cd boot
my win 7 on drive c:
it dosent go to the c:\boot
so i cant get to the bootrec /fixmbr or /fixboot or /rebuildbcd
what am i doing wrong
i had a xp drive and a win 7 drive and the xp drive was actavice un acativade it
win 7 start up dosent find my win 7
i went to the x:sourcess> it accepeted the bootrec /fixmbr
but not the bootrec /fixboot or bootrec /rebuildbcd

 

[arvin0807]

nice and very good tutorial

 

[VampireChicken]

Nice work and Thanks my one hard drive with windows 7 ultimate 32 bit has no boot folder but boots i have no idea why my other hard drive wont but i have an idea i will do what im thinking of later

 

[VampireChicken]

it dosent accept the cd boot
my win 7 on drive c:
it dosent go to the c:\boot
so i cant get to the bootrec /fixmbr or /fixboot or /rebuildbcd
what am i doing wrong
i had a xp drive and a win 7 drive and the xp drive was actavice un acativade it
win 7 start up dosent find my win 7
i went to the x:sourcess> it accepeted the bootrec /fixmbr
but not the bootrec /fixboot or bootrec /rebuildbcd

that is because there is no boot folder on C:/ i found that out my self and fixed it

 

[DavidTango]

Thanks to you guys, for all the help. It will come in handy for my Dell Laptop.
At present is not working. Cannot boot.

Oh! My Dell Laptop is Window 7 Home Edition 64 bits.

 

[vyvian]

non system disk error

I used this to fix error. very well explained & worked. Many thanks