Fix Windows Error 0x0000007B
INACCESSIBLE_BOOT_DEVICE
Windows cannot access the storage device or partition it needs in order to boot.
Severity: High
This error affects core system functionality. Left unresolved, it can cause further failures or data loss.
Best next step: Use the automated Fix-BootRecord repair to fix this immediately, or follow the manual steps below if you prefer.
Main Troubleshooting Guide
How to Fix Windows Boot Loop →Complete symptoms, causes, and step-by-step solutions for this category of errors
What Does Error 0x0000007B Mean?
Windows cannot access the storage device or partition it needs in order to boot.
The Windows components directly involved are Boot Manager, BCD Store, Storage Controller Drivers, Windows Boot Loader, System Drive Access Path. A failure in any of these components can trigger this error on both Windows 10 and Windows 11.
When Does Error 0x0000007B Appear?
- 1during Windows startup before sign-in
- 2after changing SATA, AHCI, RAID, or UEFI storage settings
- 3after cloning or migrating Windows to another drive
- 4after a failed Windows update or interrupted repair attempt
- 5after storage driver corruption or controller configuration changes
Symptoms of Error 0x0000007B
- !blue screen or recovery screen showing INACCESSIBLE_BOOT_DEVICE
- !Windows fails before reaching the sign-in screen
- !startup loops into recovery or automatic repair
- !the system firmware loads, but Windows fails during boot
Most Likely Causes of Error 0x0000007B
How to Fix Error 0x0000007B
There are two approaches: a manual fix for advanced users comfortable with Windows system tools, and an automatic fix using RescuePC Toolkit.
⚠️ Manual Fix (Advanced Users)
Use Windows Recovery Environment to verify the system drive is visible, confirm storage mode settings, and repair boot configuration only after confirming the drive path is still valid.
- Enter Windows Recovery Environment
- Confirm the system drive is visible to recovery tools
- Check BIOS or UEFI storage mode settings
- Repair boot records and boot configuration if the drive is healthy and accessible
- If repair fails repeatedly, test storage health before continuing
Note: Manual fixes require administrative privileges and familiarity with Windows system tools. Incorrect modifications can cause additional issues.
✅ Automatic Fix (Recommended)
RescuePC Toolkit can run the Fix-BootRecord repair automatically with one click.
The automated repair handles all the technical steps safely, creates a restore point before making changes, and provides a detailed log of all actions taken.
How RescuePC Toolkit Fixes Error 0x0000007B
RescuePC can help automate common startup and boot-record repair steps related to damaged boot configuration and startup corruption, but it cannot guarantee recovery from failing storage hardware or an unreadable system drive. Specifically, it:
- ✓Creates a system restore point before making any changes
- ✓Runs the automated repair sequence for boot & startup errors
- ✓Logs every action taken so you can review what was changed
- ✓Does not touch personal files, documents, or installed applications
What it does not fix: If error 0x0000007B is caused by failing hardware (bad RAM, dying hard drive, or a defective component), no software tool can resolve the underlying physical problem. In that case, hardware replacement is necessary. RescuePC Toolkit will detect and report hardware-level issues when possible.
How to Prevent Error 0x0000007B
- ✓avoid changing storage controller mode without planning for driver compatibility
- ✓keep a current backup of the system drive
- ✓do not interrupt major Windows updates or recovery operations
- ✓monitor SSD or HDD health if startup issues recur
- ✓verify boot configuration after cloning or drive migration work
When Error 0x0000007B Points to a Bigger Problem
This error is often part of a broader boot & startup problem. If it keeps happening or appears with related symptoms, use the full troubleshooting guide.
- →Windows Boot Loop — Full Troubleshooting Guide covers all related errors, symptoms, and solutions in this category
- →If the error returns after fixing, run
sfc /scannowandDISM /Online /Cleanup-Image /RestoreHealthto check for deeper system file corruption - →If multiple boot & startup errors appear together, consider running the full RescuePC Toolkit "Fix All" scan to address all detected issues at once
- →For high-severity errors that persist, check hardware health — run Windows Memory Diagnostic for RAM issues and
chkdsk /f /rfor disk problems
Frequently Asked Questions About Error 0x0000007B
Is 0x0000007B always a hard drive failure?
No. It can be caused by storage mode changes, missing drivers, damaged boot configuration, or actual drive failure. Hardware is one possibility, not the only one.
Can BIOS or UEFI changes cause INACCESSIBLE_BOOT_DEVICE?
Yes. Switching between IDE, AHCI, or RAID modes without the correct Windows driver support can trigger this error during startup.
Can RescuePC fix this automatically?
RescuePC can help with common boot-record and startup corruption scenarios, but it cannot guarantee recovery if the storage device is physically failing or the system partition is unreadable.
Will fixing 0x0000007B delete my files?
Not usually if the issue is limited to startup configuration, but storage corruption always carries some risk. Backups are recommended whenever possible.
What bigger problem family does this belong to?
It belongs to the broader Boot & Startup family and is often related to boot loops, startup repair failures, or storage-access problems during boot.
Related Troubleshooting Guides
Error 0x0000007B is often related to broader Windows problems. These step-by-step guides cover the full troubleshooting process:
Explore Boot & Startup Troubleshooting Hub
Error 0x0000007B is part of a broader category of boot & startup issues. These comprehensive hubs collect all related guides, repairs, and error codes in one place:
Fix Error 0x0000007B Automatically
The Fix-BootRecord repair handles error 0x0000007B in 1–5 minutes. RescuePC Toolkit includes 109+ repairs across all Windows error categories.
No credit card required • Works on Windows 10 & 11 • Upgrade anytime