Your PC needs to be repaired: The Boot Configuration Data file is missing some required information (0xc000000f)
Windows Boot Manager can’t find a valid BCD entry or boot files — after disk changes, failed updates, cloning or dual-boot changes.
The Boot Configuration Data for your PC is missing or contains errorsYour PC needs to be repaired Meaning
The BCD store tells the boot manager where Windows is. Changing partitions, cloning to a new disk, removing a Linux/second OS, or BIOS boot-order changes break it.
Common causes
- BCD corrupted or pointing to a moved partition
- EFI partition damaged or missing
- Disk cloned/migrated
- Wrong boot device order
⚡ Quick fix
- Use Startup Repair from recovery media
- Rebuild boot files with bcdboot
- Check BIOS boot order/UEFI vs legacy mode
Detailed fix by platform
Windows
- powershell
# Recovery Command Prompt (UEFI): assign the EFI partition a letter, then diskpart list vol select vol 4 assign letter=S exit bcdboot C:\Windows /s S: /f UEFI
How to diagnose
- Partitions — EFI partition present?
- Mode — UEFI vs Legacy
- Changes — Cloning/dual boot recently?
🔧 Still not fixed?
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Last updated 13 Oct 2026