FIX: Inaccessible Boot Device error on Windows 10

Milan Stanojevic
by Milan Stanojevic
Deputy Editor
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Inaccessible Boot Device

Blue Screen of Death errors can be caused by a problematic software or by faulty hardware. It’s common for all BSoD errors to crash Windows 10 and restart your computer in order to prevent damage.

Since these types of errors can be rather serious, today we’re going to show you how to fix INACCESSIBLE BOOT DEVICE error.

  • Inaccessible Boot Device after BIOS reset, BIOS update – According to users, this error usually appears after BIOS restart or BIOS update. This problem is caused by your configuration, but it can be easily resolved.
  • Inaccessible Boot Device external hard drive – Several users reported this problem while using an external hard drive. This is an unusual problem, but you should be able to fix it with one of our solutions.
  • Inaccessible Boot Device restart loop – According to users, sometimes you might get stuck in a restart loop due to this problem. This can be a big problem since you won’t be able to access Windows at all.
  • Windows to Go Inaccessible Boot Device – Several users reported this problem while using Windows to Go. If this error occurs, you won’t be able to run your OS from a USB storage device.
  • Inaccessible Boot Device AHCI, RAID, IDE – Sometimes your hardware settings can cause this issue to appear. To fix it, you need to check your hard drive settings in BIOS.
  • Inaccessible Boot Device installing Windows 10 – According to users, sometimes this problem can occur while installing Windows 10. Several users reported that they are unable to start Windows at all due to this error.
  • Inaccessible Boot Device overclock – In some cases, this error can appear due to overclocking. If you overclocked your device recently, be sure to remove overclock settings and check if the problem still appears.
  • Inaccessible Boot Device SSD – According to users, sometimes this issue can appear with SSDs. This can be a big problem, but you should be able to fix it using our solutions.

How can I fix Inaccessible Boot Device BSoD error on Windows 10?

Table of contents:

  1. Update your drivers
  2. Run the BSOD Troubleshooter
  3. Run the SFC scan
  4. Run DISM
  5. Check the hard drive
  6. Reinstall your graphics card driver
  7. Enter Safe Mode
  8. Enable AHCI Mode in BIOS
  9. Check for loose cables
  10. Perform Windows 10 reset
  11. Check for faulty hardware
  12. Check your hard drive
  13. Reflash BIOS

1. Update your drivers

Drivers are rather important since they allow Windows 10 to utilize your hardware, but if your drivers are outdated and thus incompatible with Windows 10, that can create all sorts of problems, one being INACCESSIBLE BOOT DEVICE BSoD error.

In order to fix these types of errors, it’s highly advised that you update your drivers. To do that, simply visit your hardware manufacturer’s website, locate the latest drivers and download them.

Some users claim that this error is caused by an IDE ATA/SATA controller driver, and according to them, the BSoD error was fixed after downloading and installing the latest version of this driver.

Did you know that the majority of Windows 10 users have outdated drivers? Be a step ahead using this guide.

Update drivers automatically

Searching for drivers on your own can be time-consuming. So, we advise you to use a tool that will do this for you automatically.

Using an automatic driver updater will certainly save you from the hassle of searching for drivers manually, and it will always keep your system up to date with the latest drivers.

Tweakbit’s Driver Updater (approved by Microsoft and Norton Antivirus) will help you update drivers automatically and prevent PC damage caused by installing the wrong driver versions. After several tests, our team concluded that this is the best-automatized solution.

Here is a quick guide on how to use it:

  1. Download and install TweakBit Driver UpdaterInaccessible Boot Device driver updater starting window
  2. Once installed, the program will start scanning your PC for outdated drivers automatically. Driver Updater will check your installed driver versions against its cloud database of the latest versions and recommend proper updates. All you need to do is wait for the scan to complete.
    scanning proccess of Tweakbit driver updater Inaccessible Boot Device
  3. Upon scan completion, you get a report on all problem drivers found on your PC. Review the list and see if you want to update each driver individually or all at once. To update one driver at a time, click the ‘Update driver’ link next to the driver name. Or simply click the ‘Update all’ button at the bottom to automatically install all recommended updates.
    Automatically Update complete Inaccessible Boot Device
    Note: Some drivers need to be installed in multiple steps so you will have to hit the ‘Update’ button several times until all of its components are installed.

2. Run the BSOD Troubleshooter

In case updating your drivers didn’t resolve the problem, go on and try Windows 10’s built-in troubleshooting tool. You can use this tool to deal with all sorts of issues, including the BSOD problems like the INACCESSIBLE BOOT DEVICE error.

Here’s how to run Windows 10’s troubleshooter:

  1. Open the Settings app and go to Update & Security section.
  2. Select Troubleshoot from the menu on the left.
  3. Select BSOD from the right pane and click Run the troubleshooter.troubleshoot blue screen Inaccessible Boot Device
  4. Follow the instructions on the screen to complete the troubleshooter.

If you’re having trouble opening the Setting app, take a look at this article to solve the issue.

If the Troubleshooter stops before completing the process, fix it with the help of this complete guide.

3. Run the SFC scan

Another troubleshooter that could be helpful here is the SFC scan. This is a command-line tool that scans your system for potential flaws, and resolves them, if possible.

So, it could also resolve the INACCESSIBLE BOOT DEVICE error. Here’s how to run the SFC scan in Windows 10:

  1. Right-click the Start Menu button, and open Command Prompt (Admin).
  2. Enter the following line and press Enter: sfc/scannowsfc scannow Inaccessible Boot Device
  3. Wait until the process is done (it may take a while).
  4. If the solution is found, it will automatically be applied.
  5. Now, close the Command Prompt and restart your computer.

If you’re having trouble accessing Command Prompt as an admin, then you better take a closer look on this guide.

scannow command has stopped before the process finished? Don’t worry, we’ve got an easy fix for you.

4. Run DISM

The third troubleshooting tool we’re going to use here is DISM. Deployment Image Servicing and Management (DISM), as its name says, re-deploys the system image all over again, and resolves potential issues along the way.

So, it’s also possible it will resolve the  INACCESSIBLE BOOT DEVICE error. We’ll walk you through both standard and the procedure that utilizes the installation media below:

  • Standard way
  1. Right-click Start and open Command Prompt (Admin).
  2. Paste the following command and press Enter:
      • DISM /Online /Cleanup-Image /RestoreHealthDISM cmd Inaccessible Boot Device
  3. Wait until the scan is finished.
  4. Restart your computer and try updating again.
  • With the Windows installation media
  1. Insert your Windows installation media.
  2. Right-click the Start menu and, from the menu, choose the Command Prompt (Admin).
  3. In the command line, type the following commands and press Enter after each:
    • dism /online /cleanup-image /scanhealth
    • dism /online /cleanup-image /restorehealth
  4. Now, type the following command and press Enter:
    • DISM /Online /Cleanup-Image /RestoreHealth /source:WIM:X:SourcesInstall.wim:1 /LimitAccess
  5. Make sure to change an X value with the letter of the mounted drive with Windows 10 installation.
  6. After the procedure is finished, restart your computer.

If you don’t have a Windows installation media, you can create a bootable USB drive with Windows 10 on it in just a couple of steps. Take a look at this awesome guide that will help you do just that.

It seems that everything is lost when DISM fails on Windows? Check out this quick guide and get rid of the worries.

5. Check the hard drive

  1. Enter the Advanced Startup (Restart your computer while holding the Shift key).
  2. Choose Troubleshoot > Advanced Options.
  3. Select Command Prompt from the list of options.
  4. When Command Prompt appears, enter the following lines and press Enter after each line in order to run it:
    • bootrec.exe /rebuildbcd
    • bootrec.exe /fixmbr
    • bootrec.exe /fixboot
  5. Some users are also suggesting that you need to run additional chkdsk commands as well. To perform these commands, you need to know drive letters for all your hard drive partitions. In Command Prompt you should enter the following (but remember to use the letters that match your hard drive partitions on your PC):
    • chkdsk /r c:chkdsk cmd Inaccessible Boot Device
    • chkdsk /r d:

    This is just our example, so keep in mind that you have to perform chkdsk command for every hard drive partition that you have.

  6. Restart your computer and check if the issue is resolved.

Want to check your HDD health automatically? Check out these amazing tools that will help you save your hard drive.

6. Reinstall your graphics card driver

graphics card gigabyte Inaccessible Boot Device BSOD error

Some users claim that they started getting INACCESSIBLE BOOT DEVICE error after updating their graphics card drivers. To fix this issue, it’s required that you uninstall your current graphics card drivers and reinstall them.

To uninstall your graphics card driver, you need to do the following:

  1. Download Display Driver Uninstaller.
  2. After you download the tool, run it and follow the instructions.

Your computer should restart after you uninstall your graphics card driver. After the restart, go to your graphics card manufacturer’s website and download a new driver for your graphics card.

Bear in mind that Nvidia users reported this problem, but even if you don’t own Nvidia graphics card, you can still try this solution.

If you want alternatives, you can check out this list with the best uninstallers that you can use right now.

Want the latest GPU drivers? Bookmark this page and always stay updated with the latest and greatest.

7. Enter Safe Mode

Safe Mode is designed to start with only necessary drivers and only the most basic software, therefore if the INACCESSIBLE BOOT DEVICE error is caused by certain third-party software, you should able to use Safe Mode without any problems.

To enter Safe Mode, do the following:

  1. Restart your computer while it boots. Do this until you start Automatic Repair.
  2. Select Troubleshoot > Advanced options > Startup Settings. Click the Restart button.
    advanced startup Inaccessible Boot Device blue screen error
  3. When your PC restarts, you’ll see a list of options. Press 5 or F5 to enter Safe Mode with Networking.

Test if your PC works correctly in Safe Mode. If there are no problems, you can use Safe Mode to update or uninstall certain drivers or applications that might be causing this error.

Users claim that in order to fix INACCESSIBLE BOOT DEVICE error it’s only necessary that you enter Safe Mode and the error should be automatically fixed when you restart your PC.

Safe mode is not working? Don’t panic, this guide will help you get past the booting problems.

8. Enable AHCI Mode in BIOS

According to users, you can easily fix INACCESSIBLE BOOT DEVICE error simply by enabling AHCI mode in BIOS. To do that, you need to do the following:

  1. While your computer boots keep pressing F2 or Del to enter BIOS.
  2. Once you enter BIOS, go to Advanced section and change Set AHCI Mode to Enabled.
  3. Optional: Set the AHCI Mode Control to Auto.
  4. Save changes and restart your PC.

It’s worth mentioning that your BIOS might be different, and to see how to enter BIOS and change the AHCI mode, be sure to check your motherboard manual for detailed instructions.

Accessing BIOS seems too big of a task? Let us make things easier for you with the help of this amazing guide!

9. Check for loose cables

cable PC Inaccessible Boot Device error

Few users reported that loose cables can be the cause for INACCESSIBLE BOOT DEVICE error, therefore you need to power down your PC, unplug it, open your computer case and check if everything is connected properly.

It’s worth mentioning that few users managed to fix this problem by connecting their hard drive to a different port on their motherboard, so be sure to try that.

10. Perform Windows 10 reset

If the INACCESSIBLE BOOT DEVICE error is caused by certain software, you can easily fix this error by performing Windows 10 reset. Bear in mind that this process will delete all files from your C partition, so be sure to create a backup.

Backup your data like a pro in just a couple of steps. Everything you need to know is right here!

After creating a backup, you might need Windows 10 installation media to complete this process. You can easily create a bootable USB flash drive with Windows 10 on it by using the Media Creation Tool.

If you’re having problems with the Media Creation Tool and you can’t run it properly on Windows 10, take a look at this article that offers some great solutions to solve the issue.

To perform Windows 10 reset, do the following:

  1. Restart your computer while it boots. This should start the Automatic Repair mode.
  2. Select Troubleshoot > Reset this PC > Remove everything.
  3. If you’re asked to insert Windows 10 installation media please do so.
  4. Select Only the drive where Windows is installed > Just remove my files and click the Reset button.
  5. Follow the steps and wait for the reset process to complete.

If the problem persists even after Windows 10 reset, you should check your PC for faulty hardware.

Need more info on how to factory reset your PC? Read this article and find out everything you need to know.

Disaster strikes and you can’t reset your PC! Fortunately, we’ve got the right solutions for you.

11. Check for faulty hardware


BSoD errors can sometimes be caused by certain hardware, most commonly RAM, so if you’re getting INACCESSIBLE BOOT DEVICE error make sure that you check your RAM.

If your RAM is working properly, check other major components such as your hard drive or motherboard. Finding a faulty component can be tricky, and you’ll have to perform a detailed inspection of your hardware in order to find it.

We also have to mention that recently installed hardware can also cause these types of errors, therefore if you installed any new hardware recently, be sure to remove it or replace it and check if your PC works without it.

12. Check your hard drive

In some cases, you might get this error due to file corruption. However, you can fix the issue simply by running a chkdsk scan. To do that, follow these steps:

  1. Press Windows Key + X to open Win + X menu. Select Command Prompt (Admin) or PowerShell (Admin).
    cmd admin
  2. When Command Prompt opens, enter chkdsk /r C: and press Enter.
    chkdsk cmd
  3. You’ll be asked to restart your PC and schedule the scan. Type Y and press Enter.

Once your PC restarts, the chkdsk scan will automatically start. If you can’t access Windows due to this error, you can navigate to Advanced Boot Menu and use Command Prompt from there.

chkdsk is giving you headaches? Check out this quick guide to fix any issues with it.

13. Reflash BIOS

In some cases, INACCESSIBLE BOOT DEVICE error can appear due to corrupted BIOS. If you’re having this problem, you might want to try reflashing your BIOS and check if that solves the issue.

Keep in mind that reflashing BIOS is an advanced procedure, and you can cause permanent damage if you don’t do it properly.

Updating BIOS seems scary? Make things way easier with the help of this handy guide.

INACCESSIBLE BOOT DEVICE error might be troublesome, but users reported that it can be easily fixed by entering Safe Mode or by updating your drivers. If these solutions don’t work, feel free to try a few other solutions from this article.

If you have any other suggestions or questions, feel free to leave them in the comments section below and we’ll be sure to check them out.


Editor’s Note: This post was originally published in June 2016 and has been since completely revamped and updated for freshness, accuracy, and comprehensiveness.