Windows BSOD INACCESSIBLE_BOOT_DEVICE (0x0000007B)

Windows BSOD INACCESSIBLE_BOOT_DEVICE means Windows cannot access the system boot drive during startup. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Stop code: 0x0000007B. Windows cannot read the drive containing the OS. Common after BIOS changes or driver updates. May appear as boot loop. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: SATA mode changed in BIOS (IDE vs AHCI). Storage driver missing or corrupted. Windows Update changed storage drivers. Cloned drive with incompatible drivers. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Check BIOS SATA mode — try switching between AHCI and IDE. Boot into Safe Mode and roll back storage drivers. Run Startup Repair from Recovery Environment. If cloned drive, inject proper storage drivers. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Windows Error Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.