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How to Fix 'Custom Built Gaming PC Shows No Bootable Device' Error

Is your custom built gaming PC displaying a 'no bootable device' error? This guide walks you through troubleshooting steps to identify and fix the issue quickly.

3 min read
A custom built gaming PC set up on a desk with RGB lighting.

If your custom built gaming PC is showing a 'no bootable device' error, it indicates that the system cannot find a storage device with an operating system to boot from. This issue might stem from incorrect BIOS settings, loose connections, or faulty hardware. Here’s how to troubleshoot the problem step by step.

What does 'no bootable device' mean?

The 'no bootable device' error generally occurs when your PC fails to recognize a storage device containing an operating system. You may encounter this message during the initial boot process, often before the operating system attempts to load. Reasons for this error include a disconnected drive, misconfigured BIOS settings, or a malfunctioning storage device.

Check your BIOS settings

To start resolving the issue, check your BIOS settings to ensure the correct boot device is selected. Here's how:

  1. Restart your PC and press the key to enter BIOS (usually F2, Delete, or Esc).
  1. Once in the BIOS, navigate to the 'Boot' tab.
  1. Verify that your primary storage device (like your SSD or HDD) is listed as the first boot option.
  1. If the drive is not detected, check the 'Storage' or 'Main' tab to see if it appears there.

If your drive is not recognized at all, check your physical connections or consider testing the drive in another computer.

Inspect physical connections

Loose or faulty connections are common causes of the 'no bootable device' error. To inspect your connections:

  1. Power down your PC and unplug it from the wall.
  1. Open the case and visually inspect all connections to your storage drives. Ensure the following: - The SATA or NVMe cable is securely connected to both the motherboard and the drive. - The power cable is properly connected to the drive.
  1. If you notice any loose cables, reconnect them firmly.
  1. Close the case, plug the PC back in, and power it on to check if the issue persists.
An open custom built gaming PC case revealing internal connections and components.

Test your hardware components

If none of the previous steps resolved the issue, you may need to test your hardware components:

  1. If you have another computer, remove the storage drive from your custom PC and connect it to the other system. - If the drive is recognized and boots properly, the problem may be with your motherboard or power supply.
  1. Try connecting a different drive to your original PC to see if it boots up. - If a different drive works, your original drive may be faulty.
  1. If neither approach resolves the issue, further testing of your motherboard or RAM might be necessary.

When to consult a professional

If you've exhausted all these troubleshooting steps and your PC still shows a 'no bootable device' error, it could indicate a more serious hardware problem. This may include a failing motherboard, corrupted firmware, or other internal issues that require specialized tools for diagnosis. At this point, consider reaching out to a technician or a repair service for further assistance.

Conclusion

After following these steps, if your PC still displays a 'no bootable device' error, seeking professional help is advisable to avoid further complications. Regular maintenance and ensuring all connections are secure can help prevent similar issues in the future.