INACCESSIBLE_BOOT_DEVICE: Windows cannot access the boot device
TL;DRWindows encountered a critical error and stopped because it could not reach the hard drive or SSD needed to start up.
Likely causes
- Storage driver issue after a Windows update, driver change, or hardware modificationmost likely
- Failing hard drive, SSD, or corrupted file systempossible
- Loose internal cables or incorrect BIOS/UEFI settingsless likely
How to fix it
Safest first: SafeChanges settingsDangerous
Restart the computer and enter recovery modeSafe
Power on the PC and repeatedly tap F8, Shift+Restart from login screen, or use installation media to reach the blue recovery screen.
Run automatic repair from recovery optionsChanges settings
Choose Troubleshoot > Advanced options > Startup Repair and let Windows attempt to fix boot files automatically.
Check the drive for errors using Command Prompt in recoveryDangerous
From Advanced options select Command Prompt and type chkdsk C: /f /r (replace C: with the correct Windows drive letter if needed).
chkdsk C: /f /r⚠ Back up important files first if possible; this can take hours and may not recover all data.
If that didn't fix it
Windows may continue failing to start and further troubleshooting or drive replacement could be required.
When to see a technician
If the drive shows hardware failure signs or recovery steps do not resolve the issue, take the computer to a technician.