When looking for a installation, it is highly recommended to use an official ISO from Microsoft rather than a "preactivated" version. Preactivated ISOs are often unofficial copies that have been modified to bypass Microsoft's licensing, which introduces significant security and legal risks. The Risks of Preactivated ISOs
Insert the bootable USB drive into your computer, restart, and enter the BIOS settings (usually by pressing F2, F12, or Del). Set the USB drive as the first boot device. Save changes and exit the BIOS settings. The Windows 10 installation process should now begin. Windows 10 Professional Preactivated X64 Original Iso