Error codes

0xc0000001

Recovery failed, no boot device

What it means

Windows could not read the boot files or the device they live on, so recovery stopped before it started.

Common causes

• The boot drive is loose or failing
• A half-finished update
• Damaged boot configuration

How to fix it

1. Start from a Windows USB stick: Troubleshoot > Advanced options > Startup Repair.
2. Check the drive cable and the BIOS: is the Windows drive listed at all?
3. Run bootrec /fixmbr, bootrec /fixboot and bootrec /rebuildbcd from the recovery command prompt.
4. If it still fails, restore a system image or install Windows again after copying your files.