I have a Dell desk top, message error, Boot configuration data file missing File;/boot/BCD Errorcode:Oxc0000034,i down loaded win. 10 worked fine than this.

System file corruption. I remember it happened to me some years ago. You'll need a way to boot that is not your corrupted disk like a repair disk or a bootable USB. always make/keep a repair disk for times like these.

Here's info on how to fix it once you've found a way to boot with the same windows version as you have on your laptop:

https://www.drivereasy.com/knowledge/0xc0000225-error-code-on-windows-10-fixed/#m1

good luck!

This error code 0xc0000034 usually indicates a problem with the boot configuration data (BCD) file on your Toshiba laptop.
The BCD file stores boot configuration information and is required for Windows to start up. The most common cause of this error is a missing or corrupt BCD file.

You can try the following steps and can try to resolve this issue:

1. Boot into the Windows Recovery Environment (WinRE)
2. Launch the Command Prompt.
3. Type the following command to rebuild the BCD file: "bootrec /rebuildbcd".
4. Press Enter and follow the on-screen instructions.

Note: If these mentioned steps do not resolve the issue, you may need to perform a repair install or a clean install of Windows.

The Boot Configuration Data for your PC is missing some required information" is a BSOD error, which is also recognized as Error code 0xc0000185. The error message explicitly indicates the fact that this bug is related to the boot configuration data, which has either been corrupted or lacks crucial information.as if you need an proper and detail solution about this problem you can can go through this blog site.

no solution

Windows 8 Boot Error Fix 0xc0000034 with Command Line Tools
try this link it might help you out.

Error Code 0xc0000034 in Windows 8 Boot Configuration Data file missing... Resolving error 0xc0000034 after installing Windows 7 Service Pack 1 SP1... Windows 8 Missing File BCD Error Code 0xc0000034

http://www.eightforums.com/installation-setup/17774-windows-8-boot-error-bcd.html

If this is windows 7 64 bit, try and update the bios from the manufacture web site.

It seems that the Boot Configuration Data (BCD) is corrupted.
Microsoft has completely reengineered the boot environment for Microsoft Windows Vista to address the increasing complexity and diversity of modern hardware and firmware. One aspect of this reengineering is a new firmware-independent data store that contains configuration data that influences the boot process. This paper provides an overview of this configuration data - called boot configuration data (BCD) - and describes how to use the related tools to manage boot options.
Step 1
Perform chkdsk which will repair the bad sectors of the hard drive.
To do this, follow these steps:
1. Click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.

2. Type chkdsk/ f, chkdsk/r, chkdsk/i, chkdsk/c in the commands listed below i.e. (/f, /r , /i, /c).
Step 2
Try to load BIOS to default and check if you have similar issue.
Step 3
I would suggest you to rebuilt BCD. To do this, follow these steps:
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.
3. Select a language, a time, a currency, a keyboard or an input method, and then click Next.
4. Click Repair your computer.
5. Click 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.

8. Type bootrec /RebuildBcd , and press Enter.

Resolution

1. Restart the PC. The hal.dll error could be a fluke.

2. Check for proper boot order in BIOS. You might see the hal.dll error if the boot order in BIOS is first looking at a hard drive other than your main hard drive.

Note: If you've recently changed your boot order or recently flashed your BIOS, this may be what's causing your problem.

3. Run Windows XP System Restore from a command prompt. If this doesn't work or you're receiving the hal.dll error message before you're able to complete this process, move on to the next step.

4. Repair or replace the boot.ini file. This will work if the cause of the problem is actually Windows XP's boot.ini file and not the hal.dll file, which is often times the case.

Note: If repairing the boot.ini does correct the hal.dll issue but the problem reappears after a reboot and you've recently installed Internet Explorer 8 in Windows XP, uninstall IE8. In this specific situation, IE8 could be the root cause of your hal.dll problem.

5. Write a new partition boot sector to the Windows XP system partition. If the partition boot sector has become corrupt or isn't properly configured, you may receive the hal.dll error.

6. Recover data from any bad sectors on your hard drive. If the physical part of your hard drive that stores any part of the hal.dll file has been damaged, you're likely to see errors like this.

7. Restore the hal.dll file from the Windows XP CD. If the hal.dll file is truly the cause of the problem, restoring it from the original Windows XP CD may do the trick.

8. Perform a repair installation of Windows XP. This type of installation should replace any missing or corrupt files. Continue troubleshooting if this does not resolve the issue.

9. Perform a clean installation of Windows XP. This type of installation will completely remove Windows XP from your PC and install it again from scratch.

Note: While this will almost certainly resolve any hal.dll errors, it is a time consuming process due to the fact that all of your data must be backed up and then later restored.

Important: If you can't gain access to your files to back them up, you should understand that you will lose them all if you continue with a clean installation of Windows XP.

10. Test the hard drive. If all else has failed, including the clean installation from the last step, you're most likely facing a hardware issue with your hard drive but you'll want to test it to be sure.

If the drive fails any of your tests, replace the hard drive and then complete a "new" installation of Windows XP.