Reinstall Windows 10 on a dual boot machine with windows 10 login issues

Daniel A 20 Reputation points
2024-08-29T10:29:28.2933333+00:00

Hi,

I have a dual boot machine (windows 11 on one drive, and windows 10 on a second drive.) When I turn the computer on, I get the Windows graphic menu to choose Windows 10 or 11.

Recently, something happened with windows 10, and now i get an unknown account once the post reaches the login screen. Obviously I don't know the credentials for that account. I do have another local account (mine) on that machine, but there is no way to switch to it . I have nothing on that windows 10 computer that I want to keep. So I want to reinstall, reset, or... windows 10

I read that I have to interrupt the boot up twice, then Windows will initiate the repair and recovery. I got there, but there is no safe boot option or way for me to login with a different account.

I would really love to keep the Dual boot setup and not lose the menu or way to choose the OS. Is there a way to reset Just windows 10, or reinstall it, or... ??? recover somehow?

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
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Windows 10 Setup
Windows 10 Setup
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Setup: The procedures involved in preparing a software program or application to operate within a computer or mobile device.
1,943 questions
Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
9,653 questions
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Accepted answer
  1. S.Sengupta 18,676 Reputation points MVP
    2024-08-30T00:30:55.12+00:00

    On any other pc, download the Windows 10 Media Creation Tool.

    Use it to create a bootable USB pressure with Windows 10 set up documents.

    Boot from the USB Drive:

    Insert the USB force into your dual-boot gadget and restart it.

    Access the boot menu via urgent the proper key (often F12, F10, Esc, or Del) in the course of startup and pick out the USB pressure because the boot device.

    Reinstall Windows 10:

    Once the Windows Setup display screen appears, select your language and keyboard alternatives, and click on Next.

    Click Install Now.

    When precipitated, pick Custom: Install Windows most effective (superior).

    Choose the partition wherein Windows 10 is currently established (normally the bigger partition or one categorized as Windows) and click on Next. This will deploy Windows 10 on that partition, replacing the prevailing installation.

    Complete the Installation:

    Follow the prompts to finish the set up.

    1 person found this answer helpful.

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  1. Yanhong Liu 9,830 Reputation points Microsoft Vendor
    2024-08-30T10:02:20.4666667+00:00

    Hello

    Thank you for posting in Q&A forum

    You have two system in your computer, so you can choose the one which you want.

    if Windows 10 is not work. you can try to format the drive and reinstall a new system which you want at that drive.

    for install the windows:

    Install Windows from a Flash Drive | Microsoft Learn

    for list OS:

    Repair the boot menu on a dual-boot PC | Microsoft Learn

    Best regards

    Yanhong

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

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

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