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Windows Error 0xC0000185 — Boot Device Inaccessible

Criticalsystem

Overview

Windows error 0xC0000185 means the boot configuration data for your PC is missing or contains errors.

Key Details

  • STATUS_IO_DEVICE_ERROR during boot
  • BCD or boot device communication failure
  • Common after sudden power loss
  • May show "Recovery: Your PC/Device needs to be repaired"

Common Causes

  • BCD (Boot Configuration Data) corruption
  • Storage device communication error
  • SATA cable loose or failing
  • Hard drive beginning to fail

Steps

  1. 1Boot from Windows installation media
  2. 2Run: bootrec /rebuildbcd
  3. 3Run: bootrec /fixmbr and /fixboot
  4. 4Check physical drive connections and cables

Tags

windowssystemsystem 0xc0000185errorfix

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Frequently Asked Questions

Possibly — but BCD corruption from power loss is more common.