🛠️ Fix ‘No Bootable Device Found’ Error Without Reinstalling Windows (2025 Guide)

Seeing the dreaded “No bootable device found” error on startup? It’s scary — but don’t panic. You don’t need to reinstall Windows. Here’s how to fix it step-by-step in 2025.

❓ Why Does This Happen?

This error usually happens when:

• BIOS settings are changed (UEFI ↔ Legacy)
• Windows Boot Manager is missing or corrupted
• Partition order was modified (e.g. cloned SSD)
• Bootloader damaged (common after Linux dual boot)

✅ 2025 Working Fixes (No Reinstall Needed)

🔧 1. Check Boot Mode in BIOS

Restart your PC and enter BIOS/UEFI (usually F2, Del, Esc)

• Go to Boot settings
• If Windows was installed with UEFI, set Boot Mode to UEFI
• If it was installed with Legacy, set to Legacy/CSM

🔌 2. Recheck Boot Order

In BIOS, make sure the drive with Windows is at the top of the boot list. Also ensure Secure Boot is OFF.

💽 3. Use Windows Recovery to Rebuild Bootloader

1. Create a Windows 10/11 USB installer (if you don’t have one)
2. Boot from it → Click “Repair your computer” → Troubleshoot → Command Prompt

Run These Commands:

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

Note: If /fixboot gives “Access Denied”, use this workaround:

diskpart
list disk
select disk 0
list partition
select partition 1 (your EFI partition)
assign letter=S:
exit

Then:

format S: /FS:FAT32
bcdboot C:\Windows /s S: /f UEFI

🖥️ 4. Use EasyBCD (Alternative GUI Method)

If you have access to Windows via another drive or dual boot:

• Download EasyBCD → Add Windows boot entry manually

🧪 5. Test Drive Health

If none of the above works, check for SSD/HDD failure:

chkdsk C: /f /r

Or use tools like CrystalDiskInfo on another PC.

🧠 Final Thoughts

“No bootable device” errors are scary — but in most cases, they can be fixed in under 10 minutes without losing your data. Don’t rush into reinstalling Windows.

Need more help? Drop your BIOS model and issue at Tsupports.blogspot.com — we’ll guide you.