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0X0000007B

Blue Screen (BSOD) INACCESSIBLE_BOOT_DEVICE Applies to: Windows 7, Windows 10, Windows 11

What it means

Windows can't access the drive it needs to boot from — often after a storage driver change, BIOS setting change, or drive connection issue.

Also seen as: INACCESSIBLE_BOOT_DEVICE, 0x7B

Quick fix steps

  1. If you recently changed a BIOS/UEFI storage setting (like AHCI/RAID mode), revert it.
  2. Boot from Windows installation media and run Startup Repair.
  3. Check the physical drive connection if this is a desktop and you've recently opened the case.
For the full step-by-step walkthrough, see Windows Stuck on the Loading Screen.

Frequently Asked Questions

Does INACCESSIBLE_BOOT_DEVICE mean my drive has failed?
Not necessarily — it often means Windows can't communicate with the boot drive properly, which can be a driver or configuration issue rather than the drive itself physically failing.
Did changing my storage controller settings in BIOS cause this?
Yes, this is a well-known, specific cause — switching a drive controller mode (like AHCI to RAID) after Windows was already installed is one of the most common triggers for this exact stop code.

Other error codes

0X0000001A — MEMORY_MANAGEMENT

Points to a problem with how memory is being handled — faulty RAM, a driver mismanaging memory, or disk corruption.

0X0000000A — IRQL_NOT_LESS_OR_EQUAL

Almost always a driver issue — most commonly network, audio, or graphics drivers.

0X000000EF — CRITICAL_PROCESS_DIED

A core Windows process crashed unexpectedly — often tied to a recent update or corrupted system files.

0X0000001E — KMODE_EXCEPTION_NOT_HANDLED

A driver running in kernel mode hit an error it couldn't recover from — usually a specific faulty or outdated driver.