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Good evening, after installing Ubuntu 14.04 as a dual boot with till now working windows 7, I can not boot windows. When I try to, a black screen appears and tells me to insert the windows installation disc to repair it and follow another 2 instructions (but I bought my computer with pre installed Windows, so I can not go this way). It also says:

File: \Boot\BCD
Status: 0xc0000034
The windows boot configuration data is missing required information

I already tried boot repair through Ubuntu twice, but it didn't work. (Here are the links: http://paste.ubuntu.com/8581328/, http://paste.ubuntu.com/8581369/). The Windows OS still seems to be on the disc. Please tell me what can I do to be able to access windows again...

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The error says that the windows Boot Configuration is missing. To repair the Boot Configuration Data (BCD), you need to use the bootrec.exe tool from Windows Recovery Environment.

The Windows Recovery Environment can be loaded by booting from a Windows 7 disk. In case you don't have a disk, you can download one and use. Using it to recover your BCD doesn't affect your license (Look at the comments here).

How to run the Bootrec.exe tool:

To run the Bootrec.exe tool, first start the Windows RE:

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

Bootrec.exe options:

  • /FixMbr
  • /FixBoot
  • /ScanOs
  • /RebuildBcd

This information has been taken from here.

  • Thank you very much for your answer! Well, I do have a partition on the hard disc which is designed like a recovery tool, but I don't have a disc to put in optical disc drive. Do you think it is possible to use this partition somehow? And will the data I have on Windows stay? – Lil Oct 18 '14 at 5:58
  • Now, I have tried the recovery tool from the partition. A light blue windows 7 screen appears (with a rather low resolution) and then it says something like "unvalid entries :recovery PartitionIndex==bootPartition" and then the computer turns itself off. What is interesting is, that it seems it's starting like "Windows Vista", though my computer has nothing in common with this OS. All the Support articles I've read still instruct "Put the Windows 7 media in the DVD drive, and then start the computer.", which I obviously can not do. Please, help me! – Lil Oct 18 '14 at 6:36
  • Do you have the option of downloading a trial edition of Windows and then recovering using it? – Chintan Oct 18 '14 at 6:40
  • That is an interesting idea, but won't it somehow affect my Winodws 7 license? (I mean, won't it rewrite the pre-installed full version and then after month or so expire?) I am also affraid, whether it won't someow affect the files, programmes or settings I have installed (I mean, the serial number or whatever won't be the same, will it?) And, finally, will it be able to run the repair tool? Won't it just install another OS? – Lil Oct 18 '14 at 19:25
  • I assumed it won't but I'm not sure and still trying to find out. Different people have different things to say. Look at my question on superuser and the comments below it superuser.com/questions/828395/… – Chintan Oct 19 '14 at 2:04

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