Meta Description:
Fix INACCESSIBLE_BOOT_DEVICE error in Windows 10/11 with proven methods. Step-by-step guide to resolve boot failure and BSOD issues.
What Is INACCESSIBLE_BOOT_DEVICE?
The INACCESSIBLE_BOOT_DEVICE error is a Blue Screen of Death (BSOD) that occurs when Windows cannot access the system partition during startup.
This means your system cannot read the drive where Windows is installed.
Symptoms
- Blue screen during boot
- Boot loop
- Windows fails to load
- Error appears after update or BIOS change
Main Causes
- Corrupted boot files
- Storage driver issues
- BIOS configuration changes (AHCI/IDE)
- Faulty SSD/HDD
- Failed Windows updates
How to Fix INACCESSIBLE_BOOT_DEVICE
Follow these solutions carefully:
1. Restart Your PC (Simple Fix)
Sometimes temporary glitches cause this error.
2. Boot into Safe Mode
Steps:
- Force restart 3 times
- Go to Troubleshoot → Advanced options → Startup Settings
- Select Safe Mode
If it boots successfully:
- Restart normally
3. Run Startup Repair
Steps:
- Enter Advanced Startup
- Go to Troubleshoot → Advanced options
- Click Startup Repair
4. Check BIOS Settings (Very Important)
Incorrect SATA mode causes this error.
Steps:
- Enter BIOS
- Check SATA Mode
- Switch between:
- AHCI
- IDE
Save and restart.
5. Repair Boot Files
Open Command Prompt (Recovery Mode):
bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd
6. Check Disk Errors
chkdsk /f /r
7. Update Storage Drivers
If accessible via Safe Mode:
- Update SATA / NVMe drivers
👉 Related article:
DPC_WATCHDOG_VIOLATION Fix
8. Uninstall Recent Updates
If error started after update:
- Go to Advanced options → Uninstall updates
Advanced Fix
Replace Faulty Drive
If the drive is damaged:
- Replace SSD/HDD
- Reinstall Windows
Prevention Tips
- Avoid interrupting updates
- Keep drivers updated
- Backup important data
- Monitor disk health
Conclusion
The INACCESSIBLE_BOOT_DEVICE error is usually caused by boot or storage issues.
Start with:
- Startup repair
- BIOS check
- Boot file repair
These methods solve most cases.