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Windows BSOD INACCESSIBLE_BOOT_DEVICE (0x0000007B)

Criticalbsod

Overview

Windows BSOD INACCESSIBLE_BOOT_DEVICE means Windows cannot access the system boot drive during startup.

Key Details

  • Stop code: 0x0000007B
  • Windows cannot read the drive containing the OS
  • Common after BIOS changes or driver updates
  • May appear as boot loop

Common Causes

  • SATA mode changed in BIOS (IDE vs AHCI)
  • Storage driver missing or corrupted
  • Windows Update changed storage drivers
  • Cloned drive with incompatible drivers

Steps

  1. 1Check BIOS SATA mode — try switching between AHCI and IDE
  2. 2Boot into Safe Mode and roll back storage drivers
  3. 3Run Startup Repair from Recovery Environment
  4. 4If cloned drive, inject proper storage drivers

Tags

windowsbsodbsod inaccessible boot deviceerrorfix

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Frequently Asked Questions

If you changed SATA mode, switching back should fix it immediately.