How to Fix Default Boot Device Missing or Boot Failed

If you have ever encountered the message "Default Boot Device Missing or Boot Failed" on your computer, you know how frustrating it can be. This error message indicates that the computer cannot find the bootable device or that the boot process has failed. It can happen for various reasons, but fortunately, there are steps you can take to fix it. In this blog post, we will explore the possible causes of the error and provide some solutions to help you fix it.

Possible Reasons for Default Boot Device Missing or Boot Failed

Before we dive into the solutions, let's explore some of the possible reasons why you might encounter this error message. Some of the common causes of "Default Boot Device Missing or Boot Failed" error include:

• Corrupted operating system: If the operating system files are corrupted or damaged, the computer may fail to boot.
• Damaged hard disk: If the hard disk is damaged or has bad sectors, the computer may fail to recognize it as a bootable device.
• Incorrect boot order: If the boot order is incorrect, the computer may try to boot from a non-bootable device, resulting in the error message.
• Malware infection: Malware infections can cause havoc on your computer, including interfering with the boot process.

Steps to Fix Default Boot Device Missing or Boot Failed

Now that we know some of the possible reasons for the error message, let's explore some solutions. Here are some steps you can take to fix "Default Boot Device Missing or Boot Failed" error.

• Check the boot order

The first thing you should do when you encounter this error message is to check the boot order. The boot order determines the order in which the computer searches for a bootable device. Here's how to check the boot order:

1. Accessing the BIOS settings: Restart the computer and press the key that appears on the screen to access the BIOS settings. The key can vary depending on the computer model, but it's usually F2, F10, or Delete.

2. Changing the boot order: Once you're in the BIOS settings, navigate to the Boot options and change the boot order to prioritize the bootable device. Save the changes and exit the BIOS settings.

• Repair the operating system

If the boot order is correct, you can try to repair the operating system. Here's how to repair the operating system:

1. Boot from installation media: Insert the installation media (CD or USB) and restart the computer. Press the key that appears on the screen to boot from the installation media.

2. Choose "Repair your computer": Once you're in the installation menu, choose "Repair your computer." The system will search for the installed operating system and present you with recovery options.

3. Follow the instructions to repair the operating system: Choose the option to repair the operating system and follow the instructions on the screen to complete the process.

• Replace the hard disk

If the hard disk is damaged, you may need to replace it. Here's how to replace the hard disk:

1. Back up important data: Before you replace the hard disk, make sure to back up all important data. You can use an external hard drive or cloud storage to back up the data.

2. Purchase a new hard disk: Purchase a new hard disk that is compatible with your computer.

3. Install the new hard disk: Open the computer case and replace the old hard disk with the new one. Install the operating system and restore the data from the backup.

• Run anti-malware software

If the computer is infected with malware, you can use anti-malware software to remove it. Here's how to run anti-malware software:

1. Choose a reputable anti-malware software: Choose a reputable anti-malware software such as Malwarebytes or Norton.

2. Install and update the software: Install the software and update it to the latest version.

3. Run a full system scan: Run a full system scan and remove any detected malware.

In conclusion, encountering the "Default Boot Device Missing or Boot Failed" error message can be frustrating, but it's not the end of the world. By following the steps outlined in this blog post, you can fix the error and get your computer up and running again. Remember to always back up your important data, use reputable software, and keep your computer updated to avoid encountering such errors in the future.