no boot device found
Moderate
Microsoft · Windows
The BIOS/UEFI firmware scanned all connected storage devices and found no valid bootable partition — similar to 'Reboot and Select Proper Boot Device' but typically indicates the drive is completely undetected
Quick Answer
Error code No Boot Device Found on your Microsoft Windows means: The BIOS/UEFI firmware scanned all connected storage devices and found no valid bootable partition — similar to 'Reboot and Select Proper Boot Device' but typically indicates the drive is completely undetected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Enter BIOS (DEL/F2 at boot) and check the SATA/NVMe device list — if your drive does not appear at all, the connection is lost or the drive has failed
2
Power off and unplug the PC. Open the case and firmly reseat the SATA data cable and SATA power cable on the boot drive. For NVMe: remove and reinsert the M.2 drive, ensuring the screw is tight
3
Try a different SATA port on the motherboard (if SATA drive) or a different SATA cable
4
If the drive still does not appear in BIOS, test the drive in another computer to determine if it has failed
5
If the drive appears in BIOS but won't boot: boot from a Windows USB, go to Repair > Command Prompt, and run: diskpart then list disk to verify the disk is visible, then try: bootrec /rebuildbcd
6
For older motherboards with an NVMe drive, check if a BIOS update adds NVMe boot support
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Replacement SATA cable
Windows installation USB
Replacement SSD/HDD if drive has failed
Related Error Codes