Hello, this is Emily.
If you forgot the password of the admin account on your computer, you can try to reset it if possible.
Is your admin user using your Microsoft account? If so, you can go on a different device, such as your phone, and go to
https://account.live.com to reset your password.
If you are using local admin user to sign in, you will need to answer the security questions if they have ever been set up, or use a password recovery USB if you have made one prior to this.
Otherwise, there's no other way around this. You will need to backup all of your important personal files, and perform a clean install, so that you can set it up correctly.
To perform a clean installation of Windows 10 using the Windows Media Creation Tool. You do need to get access to another computer so you can download the Windows installation files into a flash drive, then use the flash drive to help your computer. Hopefully you have a spare computer, or you can have friend or family help you.
The following steps should be done on a working Windows computer:
Download the Windows Media Creation Tool from Microsoft's official website.
https://www.microsoft.com/software-download/win...
Run the tool and select "Create installation media for another PC."
Choose your language, edition, and architecture (32 or 64-bit) and select "Next."
Choose "USB flash drive" as the media to use for the installation and select "Next."
Connect a USB flash drive with at least 8 GB of free space to your computer.
Select the USB flash drive you want to use, and then select "Next."
The tool will then download the required files and create the installation media.
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Now these steps will be done on your problematic computer:
Go to the computer's BIOS boot menu to have it boot from the USB drive.
Follow the on-screen instructions to install Windows 10, making sure to choose "Custom install" and select the option to delete all existing partitions.
Once the installation is complete, you'll have a clean installation of Windows 10 on your computer.
