My journey with the Linux Operating System

Wednesday, 4 March 2026

Windows 10 Operating System _ error message " Recovery .......Your PC/Device needs to be repaired .......The Boot Configuration Data file is missing some required information ....... File: \Boot\BCD ....... Error code: 0xc0000034 .......You'll need to use recovery tools. If you don't have any installation media (like a disc or USB device), contact your PC administrator or PC/Device manufacturer "

MICROSOFT Copilot Answer

That error means your Boot Configuration Data (BCD) is corrupted or missing, which prevents Windows from starting. The good news: you can usually fix it without losing your files. Here’s a clear step‑by‑step guide:

🔧 Step-by-Step Fix for Error 0xc0000034

1. Prepare Windows Installation Media

On another working PC, download the Windows 10 Media Creation Tool from Microsoft’s official site.
Use it to create a bootable USB drive (at least 8GB).
Plug this USB into your laptop.

2. Boot from the USB

Restart your laptop.
Enter the boot menu (usually by pressing F12, F2, Esc, or Del depending on your laptop brand).
Select the USB drive to boot from.

3. Access Recovery Tools

When the Windows Setup screen appears, choose your language and click Next.
Select Repair your computer (not Install).
Go to Troubleshoot → Advanced options → Command Prompt.

4. Rebuild the BCD

In Command Prompt, type these commands one by one (press Enter after each):

bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd

If asked to add installations to the boot list, type Y and press Enter.

5. Restart Your PC

Close Command Prompt.
Remove the USB drive.
Restart your laptop normally.

⚠️ If That Doesn’t Work

Try running Startup Repair from the Advanced options menu.
If repair fails, you may need to reset Windows (this can reinstall Windows but may affect apps, though files can often be kept).
As a last resort, back up your data using the USB boot drive and perform a clean install.

Risks & Notes

These steps are safe for your files, but if the disk itself is failing, recovery may be limited.
Always back up important data once your system is working again.
If you’re uncomfortable with command-line tools, you may want to ask a technician to help.

Would you like me to also walk you through how to create the Windows installation USB step by step, in case you don’t already have one?