Hi Jorma,

Thank you for sharing the issue.

Do you get stuck at rebuilding BCD?

If yes, please try the following steps from the command prompt and check:

Go to the command prompt through Windows Recovery Environment and re-build the BCD and check.

Follow these steps to do so:

a. Boot the computer using the Windows 8 bootable DVD.

b. On the ‘Windows Setup’ wizard click on ‘Next’ and click on ‘Repair your computer’.

c. You will then see a blue screen and an option to choose.

d. Click on ‘Troubleshoot’ then click on ‘Advanced Option’ and then click on ‘Command Prompt’.

e. Type these commands on the Command Prompt:

bcdedit /export C:\BCD_Backup

c:

cd boot

attrib bcd –s –h –r

ren c:\boot\bcd bcd.old

bootrec /RebuildBcd

(Press Enter after each line of command)

Following these steps will re-build the BCD.

Hope the above information is helpful.

Hi, 

Yesterday I just solved my problem. My problem is that the OS volume became hidde... Hope my solution can be useful for you guys. 

The first steps are as Microsoft guy said:

a) After you boot your computer using Windows 8 DVDor System RepairDisc, a black screen appears with gray text "Press any key to boot from CD or DVD". Press any key.

b) Select the correct time and Keyboard type. 

c) Click Repair your computerin the lower left corner.

d) Select Troubleshootfrom Choose an optionscreen.

e) Click Advanced optionsin Troubleshoot screen.

f) Click on command Prompt.

g) Type these following commands and hit enter after each line of command:

>diskpart

>list disk

>select disk 0

>list volume   // here you need to check the system volume status, if it was hidden, like mine, please follow the following guide; if your system volume was normal, please follow Microsoft guys' solution. If microsoft guys' solution cannot work, please skip this part and go to part II to fix the boot problem. 

>list partition

>select partition N  // here you need to use your system partition number to replace N.

>help set

>set id=ebd0a0a2-b9e5-4433-87c0-68b6b72699c7  // you can copy that from help set, someone said set id=07 override can work as well, but not for me...

>list volume   // check system volume status, we can assume that it was not hidden anymore. following comments is to set your system volume to c:

>select volume N // N is your system volume number

>assign letter=c:

Part II : Then, you can follow the this guy's solution to make a new boot file

to execute diskpart program

diskpart

DISKPART> list disk

DISKPART> select disk 0

DISKPART> list volume

find your system partition with fat32 file system. Here to assume it as volume 2.

DISKPART> select volume 2

To assign drive letter.

If you want to remove drive letter, use remove command.

DISKPART> assign letter=b:

To terminate diskpart command.

DISKPART> exit

Now, you sould move to b:\EFI\Microsoft\Boot, as windows stores BCD in this folder.

*>cd /d b:\EFI\Microsoft\Boot*

this is not necessary.

>ren BCD BCD.bak

To write a new bootsector on your system partition.

>bootrec /fixboot

If your windows running, you should do from here.

To create BCD store. "/f ALL" is to update BIOS setting including UEFI firmware/NVRAM.

Replace "ja-JP" with your language or remove "/l" option if you use English, of course.

It might be sense only typing "bcdboot c:\Windows".

> bcdboot c:\Windows /l ja-JP /s b: /f ALL

Then you need to finish the last part, as Microsoft guy wrote:

Bootrec /fixmbr

Bootrec /fixboot

Bootrec /scanos

Bootrec /rebuildbcd

Good luck all!

PeerIncle

I had same problem and I followed this instruction but still the last command didn't succeed. 

I ended to situation that now PC starts normally and I can even start programs from C-drive but at least Network connection is not working and when I try to shut down PC it restarts again. Only way to shut it down is to disconnect power cable.

I tried to run disk dianostic but it cannot find any problems and same with system dianostic. Any ideas what can be done next?

Hello Karen,

Welcome to Microsoft Community forum.

We need to have Windows 8 installation media or create an installation media.

Once you have the disc, follow the steps mentioned below and try to rebuild the boot configuration Data (BCD).

Note: If the computer is newly purchased, then it would be best to get in touch with the computer manufacturer to get this fixed. (If it's within the warranty period).

Here are some steps that might help fix this issue.

I would suggest you to rebuild the BCD (Boot Configuration Data) from Command prompt and check if that helps.

1. Insert the Windows 8 installation media and boot the computer using the disc.

Note: You need to check the computer manual on how to set CD/DVD drive as the first boot device in the BIOS.

2. Once you boot using the Windows installation disc, on the Windows 8 installation window, click on Repair your computer.
3. Click on Troubleshoot and in the Advanced options. Select Command Prompt. Enter the following four commands into the prompt.

bootrec /fixmbrbootrec /fixbootbootrec /scanosbootrec /rebuildbcd

4. After the completion of the commands, restart the computer and check the status.

Hope this would help. If issue still persists post back with current status of your computer and result of the proposed suggestion, we will be happy to assist you.

Thank you.

I had the same problem "Error Code: 0xc0000034 in Windows 8 - Boot Configuration Data file missing required information" starting my Asus notebook computer. I just had to hit the F9 key at starting, then I chose "Continue, leave and go to Windows 8", and luckily my notebook restarted anew !!! I did not understand why !!!

Hello 

I had a same problem with ASUS 8W an I did what you have mentioned here. I want to say that I really appreciate you for your good information.

thanks