Error Messages During Startup (e.g., Boot Device Not Found)
Getting error messages such as “Boot Device Not Found” or “Operating System Not Found” during startup can be frustrating. These errors occur when your computer fails to detect or load the necessary files needed to boot the system. In this guide, we’ll go through the common causes of startup errors and provide solutions for resolving them effectively.
Why Do Startup Error Messages Occur?
Error messages during startup can be caused by several factors, including incorrect BIOS settings, hardware failures, and corrupted boot files. Let's take a closer look at some of the most common reasons:
- Incorrect Boot Order: If the boot order in the BIOS is incorrect, the system might try to boot from a non-bootable device (e.g., USB, DVD drive) instead of the hard drive or SSD.
- Corrupted Boot Files: Corrupted or missing boot files can cause your operating system to fail to load, resulting in an error message.
- Faulty Storage Device: If your hard drive or SSD is failing, the computer might not be able to detect it during the startup process.
- Loose or Disconnected Cables: Physical disconnections, such as a loose or disconnected hard drive cable, can prevent the BIOS from detecting the storage device.
- BIOS Configuration Issues: An outdated or improperly configured BIOS can cause boot issues, preventing the system from recognizing the bootable device.
How to Fix Error Messages During Startup
Step 1: Check Boot Order in BIOS
One of the most common reasons for a "Boot Device Not Found" error is an incorrect boot order. To fix this:
- Turn off your laptop or PC and restart it.
- Press the appropriate key (usually F2, Del, or Esc) to enter the BIOS setup.
- Look for the "Boot Order" or "Boot Priority" menu.
- Ensure that the hard drive or SSD is set as the primary boot device. If not, move it to the top of the list.
- Save the changes and exit the BIOS.
If the issue was caused by a boot order problem, this should resolve it immediately.
Step 2: Check for Corrupted Boot Files
If the error persists, your boot files might be corrupted. You can try repairing them by following these steps:
- Use a bootable USB drive with a Windows installation media or a recovery disk.
- Boot from the USB drive and select "Repair your computer" instead of installing Windows.
- Select "Troubleshoot" > "Advanced Options" > "Startup Repair".
- Let the system attempt to repair the corrupted boot files. If successful, restart the computer.
This method can fix many issues caused by corrupted boot files.
Step 3: Verify the Health of Your Storage Device
In some cases, a failing hard drive or SSD can lead to startup errors. To check if your storage device is healthy:
- Connect the hard drive to another working computer, if possible.
- Use a disk checking tool (e.g., CrystalDiskInfo or HDDScan) to check the health of the drive.
- If the drive shows signs of failure (e.g., bad sectors or failing SMART status), consider replacing it.
If the storage device is failing, you may need to replace it and reinstall your operating system.
Step 4: Re-seat or Replace Cables
If your storage device is physically disconnected or there is a loose cable, the BIOS may not detect the drive. To fix this:
- Turn off the laptop or PC and unplug it from the power source.
- Open the case (for desktop) or remove the back panel (for laptop).
- Check that the cables connecting the storage device to the motherboard are secure.
- If the cables are loose or damaged, replace them.
Step 5: Update or Reset the BIOS
If none of the previous steps work, you may need to update or reset the BIOS. An outdated or misconfigured BIOS can cause boot device errors. To reset the BIOS:
- Restart the computer and enter the BIOS setup (usually by pressing F2, Del, or Esc during startup).
- Look for the "Reset to Default" option and select it.
- Save the changes and exit the BIOS.
- If the problem persists, consider updating the BIOS using the manufacturer’s official tools and instructions.
Still Facing Issues? Open Advanced Troubleshooting
If you are still encountering the error message after following these steps, there may be a deeper underlying issue with your system. For more advanced troubleshooting tips, click the button below: