how to fix INACCESSIBLE_BOOT_DEVICE Error on Windows 11 Laptop Without External Devices

kignee 20 Reputation points
2024-10-22T17:25:19.12+00:00

So I was tweaking (fixing the charging port, which required disconnecting everything, specifically the ssd KBG50ZNT256G LS KIOXIA, besides backup battery) with my laptop (Acer Aspire A315-59). after everything was done I booted up like normal and was greeted with bsod INACCESSIBLE_BOOT_DEVICE (it's actually green and mentions something about the pre-test user assembly). BIOS sees the ssd but windows boot manager does not. diskpart doesn't see the disk nor does any recovery system in windows. I now have no way of reinitialising the disk or doing anything with it besides plugging it out and back in (it didn't work obviously, for both disk slots), all I have at hand is command line in windows recovery menu. Microsoft diagnostics and recovery toolset says MSVCP100.dll, MSVCR100.dll and MSDartCmn.dll are not found.

oh and cmd runs on X:\ directory.

disk part says hard drives not found.

BIOS ver. 1.28 Intel GOP Driver 21.0.1046 Microsoft windows ver. 10.0.22621.1 in cmd

I really need to fix this because of work stuff so I would very appreciate if anybody could help with this asap.

Windows for business Windows Client for IT Pros User experience Other
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Accepted answer
  1. S.Sengupta 24,476 Reputation points MVP
    2024-10-22T23:32:48.8133333+00:00

    Check for damaged or loose SATA connections.

    May be the BCD got corrupted. Open Command Prompt as Admin and copy-paste the following commands after entering the Enter command in each case:

    bootrec /fixmbr

    bootrec /fixboot

    bootrec /scanos

    bootrec /rebuildbcd

    You may also run Kioxia SSD diagnostic tools for diagnostics.


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  1. Anonymous
    2024-10-23T08:42:02.2066667+00:00

    Hello,

    The “INACCESSIBLE_BOOT_DEVICE” Blue Screen of Death (BSOD) error indicates that Windows has lost access to the system partition during startup.

    You could try to check the setting below:

    Check Physical Connections: Since you’ve worked on the laptop internals, ensure that the SSD is properly seated in its connector. Double-check both the data and power connections if applicable.

    BIOS Settings: Verify that the BIOS is configured properly to boot from the SSD. Ensure that the SATA mode is set correctly (e.g., AHCI). Sometimes, a BIOS update or reset can change these settings.

    Boot in Safe Mode: If possible, try booting into Safe Mode to see if Windows can load with minimal drivers and services.

    Automatic Repair: Use the Windows Recovery Environment to perform an automatic repair. This might fix boot-related issues.

    Also check the information in the link below:

    How To Fix an Inaccessible Boot Device on Windows 10/11 (helpdeskgeek.com)

    Best Regards,

    Hania Lian

    ============================================

    If the Answer is helpful, please click "Accept Answer" and upvote it.

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