How to Fix the "INACCESSIBLE BOOT DEVICE" Blue Screen Error in Windows 11

The "INACCESSIBLE BOOT DEVICE" blue screen error in Windows 11 indicates that the system cannot access the boot device. This issue can be caused by various factors, including incorrect BIOS settings, faulty drivers, or corrupted system files. Here’s a guide on several methods to resolve this error and restore your system’s functionality.

1. Check Hard Drive or SSD Connections

Sometimes, this issue is related to a physical connection problem between the drive and the motherboard. Ensure that all cables are securely connected and that the drive itself is functioning properly.

2. Reset BIOS Settings

If the error appeared after a BIOS update or recent BIOS changes, try resetting your BIOS to its default settings:

  • Restart your computer and enter BIOS (usually by pressing Delete or F2).
  • Find the reset option, often labeled as Load Setup Defaults or Reset to Default.
  • Save changes and reboot the computer.

3. Run System Restore

If the error started after a recent update or driver installation, try reverting to a previous system state with System Restore:

  • Boot into Recovery Mode by pressing F8 or Shift + F8 during startup (if this doesn’t work, use a Windows 11 installation media).
  • Select Troubleshoot > System Restore and follow the on-screen instructions.

4. Repair Boot Files

Corrupt boot files can also trigger this error. Open Command Prompt from the recovery environment and run the following commands:

bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd

These commands will help rebuild the boot records and potentially resolve the issue.

5. Check and Repair System Files

Damaged system files can cause the "INACCESSIBLE BOOT DEVICE" error. Use the sfc and DISM commands to check and repair these files:

sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

These commands will identify and repair any corrupted system files.

6. Verify Drivers

Incompatible or corrupted drivers can sometimes lead to this error. Try booting into Safe Mode to uninstall or update drivers:

  • Enter Safe Mode from Advanced Startup Options.
  • Open Device Manager and uninstall any recently installed drivers that might be causing conflicts.