Delete all partitions making an unallocated drive.
Then install Windows using a bootable Windows 10 iso.
https://www.tenforums.com/tutorials/1950-clean-install-windows-10-a.html
https://www.tenforums.com/tutorials/9230-download-windows-10-iso-file.html
https://www.microsoft.com/en-us/software-download/windows10
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