Share via

your pc needs repair the operating system couldn't be loaded because a critical system driver is missing or contains errors. File: |WINDOWS\system32\drivers\nllVmm.sys Error code: 0xc000007b

sarat k 5 Reputation points
2025-07-27T13:22:19.61+00:00

I am seeing below message when ever I try to start my hp spectre windows laptop. I am running windows 11. I have bit locker enabled for the laptop. Even the safe mode windows is not starting. I don’t have installation media.cfa20ad4-5f24-4759-b94f-4bf2a4ec1330

your pc needs repair the operating system couldn't be loaded because a critical system driver is missing or contains errors. File: |WINDOWS\system32\drivers\nllVmm.sys Error code: 0xc000007b

Windows for home | Windows 11 | Recovery and backup
0 comments

2 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Gunasekar N 67,475 Reputation points Independent Advisor
    2025-07-27T14:09:06.7833333+00:00

    Hello, thank you for reaching out to Microsoft Q&A.

    The error message indicates that your Operating system files have been corrupted. If you no longer have the installation media, press F1 to enter the Recovery Environment screen, then select Advanced Options and Open Command Prompt. Execute the commands one by one and see if it helps.

    chkdsk c: /f /r

sfc /scannow

    Once completed, restart your computer and check if it boots into Windows 11 normally.

    Note - In the WinRE, the driver letter for your disk might not be C:, sometimes it could be D. You can type bcdedit to check which drive contains the OS folder.

    If you're still encountering the same error, try Reset this PC > Keep my files > proceed with the local reinstallation option to see if Windows reinstallation resolves the issue.

    If system recovery fails, you'll need to create a USB Bootable installation media and use it to reinstall Windows.

    Here are the detailed steps and a video link for creating a USB Bootable installation media for your reference.

    https://www.microsoft.com/en-us/windowsinsider/cleaninstall

    Let me know if you still need more help.

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments
  2. Deleted

    This answer has been deleted due to a violation of our Code of Conduct. The answer was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

    Comments have been turned off. Learn more

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.