Boot device not found

Hard drive error messages typically indicate issues with the storage device that may
result in data loss, slow performance, or system instability. These errors can range
from minor problems, such as corrupt files, to severe hardware failures.

How to fix "Boot Device Not Found" error

Michael Jones, our Chief Technician says:

"The "Boot Device Not Found" error typically means that your computer is unable to detect a device with a bootable operating system. This can happen due to various reasons like incorrect BIOS/UEFI settings, a failed hard drive, or a corrupt bootloader."

1. Check BIOS/UEFI Settings:

Access BIOS/UEFI: Restart your computer and press the designated key (usually F2, F10, Del, or Esc) to enter BIOS/UEFI.
Verify Boot Order: Ensure that the hard drive with the operating system is listed as the first boot device.
Save and Exit: After confirming the boot order, save the changes and exit.

2. Check Hard Drive Connection:

Open the Case (for Desktops): Ensure that the SATA/IDE cables are properly connected to the motherboard and hard drive.
Reseat the Drive: For laptops, reseat the hard drive to ensure a solid connection.
Check for Damage: Inspect the cables and ports for any signs of damage. Replace them if necessary.

3. Run Diagnostics:

Most computers have built-in diagnostics tools (HP, Dell, etc.) that you can run by pressing a specific key during startup (e.g., F12, F9). These tools will check for hardware issues, including hard drive problems.

4. Repair the Bootloader (for Windows):

Create a Windows Installation/Recovery USB/DVD:
Use another computer to create a bootable USB with Windows installation media (you can use the Microsoft Media Creation Tool).
Boot from USB/DVD: Insert the bootable media and boot from it.
Access the Command Prompt:
After selecting your language, click "Repair your computer" → "Troubleshoot" → "Command Prompt."
Run Boot Repair Commands:
bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd
These commands will repair the Master Boot Record (MBR) and the Boot Configuration Data (BCD).
Restart the Computer: After repairing the bootloader, restart your computer and see if the error is resolved.

5. Check Hard Drive for Failure:

Access Disk Management (if you're able to boot into Windows or use recovery tools):
In Disk Management, check whether your hard drive is listed and if it shows any problems (e.g., uninitialized, unallocated).
Use SMART Diagnostic Tools:
Use tools like CrystalDiskInfo or the built-in SMART tool in BIOS/UEFI to check the health of your hard drive.

6. Run CHKDSK to Check File System:

Boot into the recovery environment as described earlier, and in the command prompt, run:
chkdsk C: /f /r
This will check for and fix file system errors, and it will attempt to recover any bad sectors.

7. Reinstall the Operating System:

If your bootloader is corrupt beyond repair or if your operating system has become too damaged, you may need to reinstall the OS.
Backup First: Before reinstalling, if possible, back up any important files using a live USB (e.g., a Linux distribution like Ubuntu) or by connecting the hard drive to another machine.

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Author:
Michael Jones, Chief Technician

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