【Resolved】No boot disk detected or disk failure

Key takeaways:

• The "No Bootable Device Found" error commonly appears when starting up a computer.
• This error can be caused by incorrect boot configuration or a damaged boot disk.
• The tool provides six options to fix this issue, and you can follow this tutorial to proceed.

When starting up their PC, users of HP or Acer might encounter the "No Bootable Device Found" error. The system fails to locate the boot information needed to load the operating system. This guide will assist you in analyzing the root cause and provide possible solutions to successfully boot your computer.

Why can't the boot disk be detected?

When a computer boots up, it needs to retrieve boot information and other operational data from the hard disk. If the boot disk is not detected or there is a disk failure, it indicates a failure in obtaining the boot information. Here are some common causes for this error: 1. Hard disk not connected: Ensure that the hard disk is correctly connected to the computer's motherboard, including both data and power cables. 2. Boot sector issue: The boot sector might be corrupted by a virus or damaged, preventing the reading of boot information. 3. Missing or corrupted system files: Essential files of the operating system might be missing or damaged, affecting the normal startup. 4. Incorrect BIOS settings: The hard disk settings in the Basic Input/Output System (BIOS) might be wrong, requiring entry into the BIOS for inspection and adjustment. 5. Hard disk failure: Physical damage like bad sectors or motor failure in the hard disk could prevent data retrieval. 6. Boot device priority setting: If there are multiple hard disks, the boot device priority in the BIOS might be incorrectly set. 7. Operating system installation issues: Recent installation or upgrade of the operating system might have resulted in problems during the process, leading to an inability to start. 8. System recovery or reset issues: If a system recovery or reset was attempted but encountered problems, it might prevent normal startup. To resolve this issue, you can try the following steps: 1. Check and ensure all hardware connections are secure. 2. Attempt to boot the computer in safe mode or using a system repair disk. 3. Run a virus scan to rule out infection. 4. Inspect the hard disk settings in the BIOS and make sure it is set as the primary boot device. 5. If it's a new OS installation, consider reinstalling. 6. If physical damage to the hard disk is present, you may need to replace the disk or seek professional data recovery services. Please note that depending on the specific issue, different solutions might be required. It's advisable to consult with a professional or refer to relevant technical documentation before attempting any actions.

• Hard drive connection failure or looseness
• Incorrect boot order setting
• Broken boot configuration data
• Hard drive failure
• Operating system missing on HDD/SSD

After getting to know the reasons behind these troubles, we will proceed to show you effective ways to fix no bootable device or disk failure issues. If you find this article helpful, please share it with others in need via the social buttons below.

#2 Six Ways to Fix the No Bootable Device Found Error

With the causes identified, you can jump straight to the targeted solutions for fixing the missing boot disk error. Or, you can resolve the issue by going through the troubleshooting steps below in order:

1. 1. Check the Hard Drive Connections
2. 2. Change the Boot Order
3. 3. Repair the Boot Sector
4. 4. Check the File System
5. 5. Run Automatic Repair
6. 6. Reinstall Windows

This guide will provide step-by-step instructions for each.

Read more: Default boot device missing or boot failed

1. Check the Hard Drive Connections

To fix a boot error, check the connections to your hard drive to make sure it's properly connected to your computer. The jostling of a laptop can cause cables to become loose, leading to a “hard drive not detected” error. Handle everything carefully to avoid damaging any hardware.

Step one: Turn off the computer, remove the battery, and take the HDD out of the computer.

< strong > Step 2:< /strong> Clean all ports and cables, then reattach the HDD.

Note: If you don't have the proper tools or know-how, it's best to consult a computer expert or engineer.

No Boot Device Found on HP Laptop? How to Fix?

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2. Change the boot order

If the boot disk is not at the top of the boot order, the computer will attempt to boot from another source. If it doesn't find valid boot information, this can also lead to the issue of undetected disk errors. To resolve this, you can change your computer's boot order in the BIOS:

Step 1. Turn on your computer and press F1/F2/F12/Delete or another designated key to enter the BIOS.

Step 2: Select the "Boot" option from the list of options.

Step 3: Find the boot order and use the arrow keys to move it up.

If that doesn't work, try the other fixes.

Read also: System cannot find any bootable devices

3. Repair the Boot Sector

The Master Boot Record (MBR) is found at the beginning of a bootable hard drive, and it's what helps your computer start up successfully. A damaged MBR will cause your system to be unable to read the startup information it needs, so your computer won't boot. You'll need to fix the boot sector. You can do this one of two ways:

Utilize the tool Partition Master to rebuild MBR

AOMEI Partition Assistant Professional is a versatile disk management tool that simplifies the steps of Windows built-in tools to help you quickly fix MBR. It allows you to create a WinPE bootable disk, enabling you to easily boot your computer without losing data. If you're not familiar with computer operations, this tool is perfect for you:

Download this powerful tool for free and rebuild the MBR:

Step 1: Create a bootable WinPE disk

1. Launch Partition Master and click "Bootable Media" on the toolbar. Select "Create Bootable Media." 2. Click "Next" to complete the process.

Create a Bootable Disk

Step 2. Boot into the Partition Wizard bootable USB.

Connect the bootable USB or CD/DVD to your computer. Restart your computer and press F2 or Del to enter BIOS. Set it to boot from “Removable Device” or “CD-ROM Drive.” The Partition Master tool will then launch automatically.

Step 3: Rebuild the MBR

Click on “Toolbox” and select “Rebuild MBR”.

Select the disk and MBR type, then click “Rebuild”.

You'll then see "The MBR for Disk X has been successfully rebuilt."

If you encounter other boot errors, you can try to fix them with the Partition Master tool:

Rebuilding MBR using CMD

If you're comfortable with computer commands, you can use the Windows Media Creation Tool to create bootable media and then fix the MBR from the Windows Recovery Environment Command Prompt:

Step 1: Boot the computer from a Windows installation CD or DVD.

Step 2: Open Command Prompt: From the “Choose an option” screen, select “Troubleshoot,” then “Advanced options,” and then “Command Prompt.”

Step 3: Type the following commands one by one in the Command Prompt window, and press Enter after each:

These are commands used in the Windows operating system to repair the boot record: 1. bootrec /fixmbr: Fixes the Master Boot Record (MBR), which is a small program on the hard drive responsible for loading the operating system. 2. bootrec /fixboot: Repairs the boot sector by writing a new one to the system partition, helping to restore normal system startup. 3. bootrec /scanos: Scans all system partitions to find installable operating systems. 4. bootrec /rebuildbcd: Rebuilds the Boot Configuration Data (BCD), assisting in repairing entries in the boot menu when the BCD store is damaged.

Be careful when typing commands to avoid losing data. Then, you can restart your computer and see if the issue is resolved.

4. Check the file system

If your system drive is having issues, you might receive a “Disk Failure” error. In this case, there are two ways to scan and fix file system errors on the hard drive. Both methods rely on the same principle as Method 3, which requires you to create a bootable media. You can follow these steps to check the file system:

Use the tool Partition Master to check the file system.

Aside from the methods mentioned, tools Partition Master also offers "Check File System" and "Surface Test" features that help detect and fix hard disk errors. This serves as an alternative to the Windows command, but in a more straightforward and comprehensive way. After creating a bootable USB in Method 3, you can boot your computer and use the tool directly:

Step 1: Right-click on the problem partition.

2. Choose Tools > Check File System.

Step 3: Choose whether to hide the partition.

Step 4. In the “Check File System” window, select the option to “Try to repair errors if found.”

Click “Start” to begin checking for errors on your partition.

In addition, the tool can thoroughly check the hard drive health and warn you if there are any issues with the drive's performance or temperature.

Run the CHKDSK utility to check the file system.

CHKDSK is a tool provided by Windows to check and fix file system errors. Similar to Method 3, you need to open Command Prompt:

Step 1: Boot the computer from the Windows startup disk.

Step 2: Select “Advanced options” and then choose “Command Prompt.”

Step 3: Type the command chkdsk c: /f /r /x, and then press Enter.

Read more: How to Run CHKDSK on an SSD

5. Run Automatic Repair

You can also run the Automatic Repair/Startup Repair to fix errors that are preventing your computer from starting. Before you do that, you'll have to boot into the Windows Recovery Environment using Partition Master or the Windows installation media.

Step 1: Boot from the CD-ROM/DVD and press any key to continue.

Step 2: Click “Repair your computer,” and then choose “Troubleshoot.”

Step 3: Choose “Advanced options” > “Automatic/Startup Repair.”

Step 4: Wait for Windows to finish the automatic repair process.

6. Reinstall Windows

If the above methods don't work, there might be something wrong with your Windows system. You can reinstall Windows to fix the error. This will remove all files, so back up important information or copy the partition to another hard drive before you do a fresh installation.

For more on installing Windows, read how to do a clean install of Windows.

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Conclusions

We offer six solutions for the startup error "No bootable device or disk failure." Whether you're using an HP laptop or any other computer, you can find methods to resolve startup issues in this article. The Partition Master tool provides a quick and easy solution to create a bootable media and fix common errors.

Frequently Asked Questions (FAQs) About "No Bootable Device Found" Issues

If you have more questions on this topic, you can refer to the following simple Q&A session:

What if no bootable device is shown?

The "No Bootable Device" error might occur because you haven't altered the boot order. To fix this issue, you should first change the boot device sequence:

Step 1. Restart your computer and enter the BIOS screen.

Step 2: Under the “Boot” tab, find your hard drive and move it to the top of the boot order.

2. What does “No boot disk has been detected” mean?

"No bootable device found" means that your computer is unable to start up. This could be due to a damaged boot disk or poor connection between the disk and the computer, preventing it from retrieving boot-up information.

3. Why do I get a "Media Test Failure, Check Cable" message?

This error indicates an issue with the computer's PXE. Incorrect boot order configuration, a damaged boot device, a corrupted boot sector, or power issues can cause this error.