INACCESSIBLE_BOOT_DEVICE Error in Windows 10
I am suffering from a terrible issue: I did a clean reset for my computer after
having some problems with Windows 10. I proceeded to reset my PC. During the process
of resetting, it came up with Windows 10 logo and the loading wheel while the
resetting circle reached 100%. Then it went to a blue screen with an error message:
Your PC ran into a problem and needs to restart. We’ll restart for you. If you’d
like to know more, you can search online later for this error:
INACCESSIBLE_BOOT_DEVICE. Then it restarted and stuck in Windows 10 INACCESSIBLE
BOOT DEVICE loop. Please help, thanks a lot.

The Causes to Windows 10 INACCESSIBLE_BOOT_DEVICE (Error 0x0000007b)
The INACCESSIBLE BOOT DEVICE has an error code: 0x0000007B. Why the Windows 10
INACCESSIBLE BOOT DEVICE error occurred? Microsoft claimed that the error indicates
the Microsoft Windows operating system has lost access to the system partition
during startup. Therefore, Microsoft listed the causes might induce the INACCESSIBLE
BOOT DEVICE error:
Boot device failure. The boot device driver might fail to initialize the boot
device during I/O system initialization.
File system initialization failed.
Repartition the system partition.
Change the BIOS configuration.
Incompatible disk hardware, like install a disk controller and add a hard
drive, which might be incompatible with your Windows operating system.
Whatever the cause is, you have to know how to fix INACCESSIBLE BOOT DEVICE Windows
10. Thus, below we will give you the best 5 ways to resolve.
5 Ways to Fix INACCESSIBLE_BOOT_DEVICE in Windows 10
You can try these ways to solve INACCESSIBLE BOOT DEVICE error after Windows 10
update or BIOS update:
1. Remove the recently added hardware, especially hard drives or controllers, to see
if the error is fixed. The error maybe caused by incompatible disk hardware.
2. Revert changes to BIOS settings if you have done or update BIOS and Firmware.
3. Booting into Safe Mode loads a core set of storage drivers if you can boot
Windows, then restart your PC to see if the issue is solved.
4. Create bootable media to perform a clean install.
5. Repair corrupted or missing system files if you cannot boot your PC.
The first 4 ways are quite simple, in our post, we will introduce you the last way to
repair Windows 10 INACCESSIBLE BOOT DEVICE error. If the system files is corrupted
or missing will result in this problem, the corrupted or missing system files
probably will be the Master Boot Record (MBR). Then, how to repair MBR for your
computer? Use the freeware-AOMEI Partition Assistant Standard to
rebuild MBR. Before you do, create a bootable media with a normal PC to boot your
Windows 10, then rebuild MBR under WinPE via AOMEI Partition Assistant Standard.
Below are the details:
Step 1, Free download, install and run AOMEI
Partition Assistant Standard, insert your USB drive to the computer and make sure it
can be detected. At the left side, select Make Bootable
Media. Press Next in next window.

Step 2, Tick USB Boot Device, then press Proceedto
create bootable USB.

After a few minutes, the bootable USB drive is ready. Then boot your Windows 10 PC
via the bootable USB drive, then run AOMEI Partition Assistant Standard to rebuild
MBR.
Step 1, On the main window, click Rebuild MBR underDisk Operations column.

Step 2, Choose the proper MBR type for your Windows 10 OS.

Step 3, Click Apply to rebuild MBR to fix
INACCESSIBLE_BOOT_DEVICE in Windows 10.

Apart from these two functions, AOMEI Partition Assistant also provides the service
for migrating OS to SSD, partition
recovery, Integrate to Recovery Environment, and more. Moreover, for
advanced users, you can try the AOMEI
Partition Assistant Professional edition.