Windows "No Boot Device Found" Error? Here’s How to Fix It

Windows "No Boot Device Found" Error? Here’s How to Fix It

If your Windows PC shows "No Boot Device Found" on startup, it usually means the system cannot detect the hard drive or bootable OS. This can happen due to BIOS settings, loose cables, corrupted boot files, or hardware issues. Follow these steps to fix it.

1. Restart Your Computer

Sometimes a simple reboot resolves temporary detection glitches.

2. Check BIOS/UEFI Settings

  • Restart PC → Press F2 / Del / Esc (depends on motherboard)
  • Ensure the hard drive/SSD is detected
  • Check Boot Order → Make sure Windows drive is first

3. Check Physical Connections

Turn off PC → Open case → Check SATA/Power cables for HDD or SSD.

4. Reset BIOS to Default

  • BIOS → Load Default Settings → Save & Exit

5. Use Windows Automatic Repair

  • Boot from Windows installation media → Repair your computer → Troubleshoot → Advanced Options → Startup Repair

6. Check for Corrupted Boot Files

  • Boot into Windows Recovery → Command Prompt
  • Run: bootrec /fixmbr, bootrec /fixboot, bootrec /rebuildbcd

7. Check Hard Drive Health

Faulty HDD/SSD can cause boot errors. Use diagnostic tools from the manufacturer.

8. Update BIOS (If Needed)

Sometimes outdated BIOS causes drive detection errors. Update carefully from the manufacturer website.

9. Reinstall Windows (Last Option)

Backup your data (if accessible) → Reinstall Windows to fix boot issues.

When to Seek Professional Help

If the PC still cannot detect a boot device, it may be a hardware failure. Contact a certified technician or service center.

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