Hello,
Yes, you can install Windows 11 using a USB installation media, even if you don’t have access to the previous Windows passwords or installation files.
To proceed, we recommend using the Windows 11 Installation Assistant or the Media Creation Tool to create a bootable USB drive. Once created, you can boot each computer from the USB and perform a clean installation of Windows 11. Please note that this process will erase all existing data, including user accounts and passwords.
Before installing, ensure that each device meets the minimum system requirements for Windows 11, including TPM 2.0 and Secure Boot. If the devices are eligible and you have valid licenses, you can proceed without needing the old Windows programs.
If this guidance helps, feel free to mark this answer as accepted so others can benefit too. Let me know if you need help with creating the USB or checking system compatibility— I am happy to assist!
Best regards,
Domic Vo.