Fixed: Dell Laptop Inaccessible Boot Device Error (5 Ways)

You can learn five ways to fix Dell laptop Inaccessible Boot Device error! Finally, we recommend you to backup your Windows system to prevent unexpected data loss!


By Miya Updated on August 11, 2023

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User Case: How to Fix Dell Laptop Stop Code: Inaccessible Boot Device

Hi, I am getting this error upon starting since yesterday. Basically, I am unable to boot further DELL LOGO. Getting the message "YOUR PC RAN INTO A PROBLEM AND NEEDS TO RESTART. WE'LL RESTART FOR YOU". The same comes upon every restart and getting the Dell laptop stop code: Inaccessible Boot Device. Currently using DELL INSPIRON 3647. Kindly help!   

- From Dell Community

If you are experiencing a Dell laptop Inaccessible Boot Device error like this user, don't worry! This article will provide you with detailed five ways to solve this problem! You can choose any one of them according to your needs. At the end, we also recommend professional backup software for you, you can backup your Dell laptop data in advance to prevent any accidental data loss! Let's take a look at why the Dell laptop Inaccessible Boot Device error occurs!

Inaccessible Boot Device Windows 11 SSD

What Causes Inaccessible Boot Device Error on Dell Laptop?

The error "Inaccessible Boot Device" on a Dell laptop can occur due to several reasons. Here are a few possible causes:

  • Corrupted or outdated device drivers: Incompatible or outdated drivers for storage devices (such as hard drives or SSDs) can lead to this error. It may occur after a driver update or due to driver conflicts.
  • Hardware issues: Faulty or improperly connected hardware components, such as hard drives or cables, can trigger the Inaccessible Boot Device error.
  • Disk configuration problems: Incorrect disk settings, such as an incorrect disk mode (AHCI, RAID, or IDE), can result in the error message.
  • File system corruption: If the file system on the boot drive becomes corrupted or damaged, the system may fail to access the necessary files during the boot process, leading to the error.
  • Malware or virus infections: Certain malicious software or viruses can interfere with the boot process and cause the Inaccessible Boot Device error.
  • Recent software or system changes: Recent software installations, updates, or system changes can sometimes conflict with the boot process and trigger the error.

How to Fix Dell Laptop Inaccessible Boot Device Error with 5 Ways

If you're frustrated and overwhelmed by the Inaccessible Boot Device stop code on your Dell laptop, and you're eager to resolve the issue and restore your computer's normal functionality, fear not. I've compiled five proven and practical methods that have been successful for many users. Feel free to try each of them to see if they effectively restore your computer to a healthy state.  

Furthermore, if you want to avoid dealing with recurring system problems, this article also suggests the top-rated free third-party tool for your convenience. So, without further ado, let's dive in and begin the troubleshooting process.

1. Execute Windows Startup Repair Procedure

Windows Recovery Environment (WinRE) serves as a recovery environment specifically designed to address typical issues that render operating systems unbootable. To resolve the Inaccessible Boot Device error during Dell laptop startup, you can attempt to access WinRE by following the steps outlined below:

Step 1. When you encounter the startup screen, power off your computer. Repeat this process three times consecutively. This will initiate the booting into WinRE.

Step 2. Within WinRE, choose Troubleshoot > Advanced options > Startup Repair.

Startup Repair

2. Initiate System File Scan

The Windows System File Checker (SFC) is a built-in tool present in all recent versions of Windows on Dell laptop. Its purpose is to assist in repairing corrupt system files within the Windows operating system. Here are the steps to utilize this tool:

Step 1. In the search box, type Command Prompt, then right-click on it and select Run as administrator.

Step 2. Input the command DISM.exe /Online /Cleanup-image /Restorehealth and hit Enter.

Step 3. Next, type sfc /scannow and press Enter. Allow the process to complete.

SFC Scannow

3. Upgrade IDE ATA/SATA Controller Drivers

The presence of an outdated or corrupt driver can contribute to the occurrence of the Dell laptop Inaccessible Boot Device error. Fortunately, updating or reinstalling the driver can effectively resolve this issue. To proceed with the driver update, follow these steps:

Step 1. Right-click the Start icon located in the taskbar to access the context menu, and then select Device Manager.

Step 2. In the Device Manager window, locate and expand the IDE ATA/ATAPI controllers section by clicking the arrow next to it. Right-click on the specific option related to the driver in question. From the available options, choose Update driver to initiate the driver update process.

Update Driver

Step 3. Within the newly opened window, you will encounter two options. Select the one that aligns with your specific requirements or preferences.

Search Automatically for Drivers

Step 4. Simply follow the prompts provided by the wizard and proceed with restarting your Dell laptop in the usual manner.

4. Restore BIOS Configuration to Default Settings

Based on user feedback, enabling AHCI mode in the BIOS has proven to be a highly effective method for resolving the Dell Latitude 7420 Inaccessible Boot Device error. Follow the steps below to implement this solution:

Step 1. Restart your Dell laptop and during the startup process, press F2/DEL to access the BIOS.

Step 2. Within the Advanced Options menu, locate the setting for Configure SATA as and change it to AHCI. Save the changes by pressing F10 and exiting the BIOS.

Reset BIOS Configuration

5. Initiate a Check Disk Scan

Check Disk (CHKDSK) is a utility that scans your hard disk for errors and fixes them. However, it's important to note that CHKDSK takes control of the hard disk and prevents other programs from running until the process is complete. Therefore, it is advisable to run CHKDSK when you can afford several hours of system downtime.

Step 1. In the Start menu search bar, type cmd, then right-click on Command Prompt and select Run as administrator.

Step 2. Input the command chkdsk /f /r C: (replace "C" with the appropriate drive letter) and press Enter. CHKDSK will scan for errors on the drive and notify you if any issues are detected. However, it won't attempt to fix them without a command from you.

Check Disk Scan

Step 3. When prompted to check the disk during the next system restart, press the "Y" key to confirm.

Step 4. Proceed to restart your Dell laptop and observe if the issue has been resolved.

Backup Your Dell Laptop to Prevent Any Disaster

Dealing with the frustrating Dell laptop Inaccessible Boot Device error can be quite bothersome.  And there are times when the above five methods  have failed to provide a satisfactory solution without disrupting your computer's daily usage. Therefore, it is very important to backup laptop for disaster recovery. In this regard, I highly recommend AOMEI Backupper Standard, a top-notch free backup software. By creating a system backup, it offers an additional layer of security for your essential data, enabling quick restoration to a stable state if necessary.

๑ You can effortlessly back up your system to various locations such as backup Windows 10/11 to network drive or NAS, USB drives and external hard drives, among others.
๑ It boasts excellent compatibility, supporting Windows PC operating systems such as Windows 11, 10, 8.1, 8, 7, Vista, and XP.
๑ The software allows you to optimize backup efficiency by utilizing incremental or differential backup methods (differential backup is available in the Pro edition), surpassing the capabilities of Windows' built-in tool.

Follow the step-by-step instructions below to create a system image backup and prevent system errors from occurring.

To begin, download this freeware to your Dell laptop, install it, and launch the program.

Download FreewareWin11/10/8.1/8/7/XP
Secure Download

Step 1. In the left panel, navigate to the Backup section and select System Backup.

System Backup

Step 2. The program automatically identifies the system-related partition(s) as the source data. Simply choose a destination path for the Dell laptop backup.

Select Destination Path

Tip: To customize your backup settings, locate the lower left corner and click on the Options, Schedule Backup, and Backup Scheme options.

Options: With this feature, you can freely add comments to the current backup job and enable email notifications. Upgrading to the Pro version provides access to encrypted backup capabilities as well.

Schedule Backup: This option empowers you to establish Daily, Weekly, and Monthly backup schedules. Additionally, you can utilize Event triggers and USB plug in settings for greater flexibility.

Schedule Backup

Backup Scheme: This option grants you the ability to customize the backup method as either full or differential backup. However, please note that the differential backup and auto-cleanup features are exclusively available in the professional version, necessitating an upgrade.

Step 3. Click on the Start Backup button to initiate the backup process for your Dell laptop system.

Start System Backup

☄ Tip: Once you have successfully created a system image backup, you can utilize it to restore your Dell laptop to a previous state whenever necessary.

In the event that your Windows system has crashed or is unable to boot up properly, you can employ the Create Bootable Media function within the Tools section. This allows you to restore the system backup that was created earlier, even without accessing Windows.

Create Bootable Media


Here are the five solutions for addressing the Dell laptop Inaccessible Boot Device error. Feel free to try them one by one to determine if any of them resolve the issue. However, if you wish to avoid recurring system problems, it is advisable to seek assistance from reliable third-party backup software.

AOMEI Backupper is highly recommended as it allows you to create a system image backup in advance. This backup can be used to restore your computer to a healthy state in the event of encountering similar system errors such as performing Windows 11 system restore from boot . And it is the optimal choice, offering both free and professional versions, ensuring the protection of your files and data. Furthermore, it provides numerous powerful features that await your exploration. Don't hesitate to give it a try and experience its capabilities firsthand!

Miya · Editor
Miya has an excellent insight and receives professional and systematic technical training since joining AOMEI. She has a comprehensive understanding of computer issues, aiming at helping users troubleshoot all kinds of problems. A lot of computer users around the world have found her articles very helpful!