Error codes

0xc0000098

The boot configuration data file does not contain a valid OS entry

What it means

The BCD store is there but has no usable entry for Windows, so the boot manager has nothing it is allowed to start.

Common causes

• A deleted or overwritten BCD entry
• A second install or cloning tool rewriting the boot store
• The system partition changed drive letter or size

How to fix it

1. Start the PC from the Windows install stick or recovery drive, then choose Repair your computer > Troubleshoot > Advanced options > Command Prompt.
2. In that recovery Command Prompt run bootrec /fixmbr, bootrec /fixboot and bootrec /rebuildbcd in that order, answering yes when it finds a Windows installation.
3. If rebuildcnd finds no installations, run bcdedit /enum all and check whether the Windows entry still exists.