Format or delete C drive with using Command Prompt (CMD). This allows you to remove all data and reinstall Windows 11/10.

To format a hard drive before you start using it in Windows, use the Disk Management utility; on a Mac, use Disk Utility.

The command is: Format H: /P:7 The number after /P: is the number of secure erases Windows performs (so in this case it's a total of 7). Read more at the link below.