Rufus 3.22 includes hidden options to bypass Windows 7 restrictions:
If you are forced to use Windows 7, utilize the USB 2.0 ports and run Rufus as Administrator . If you must use a USB 3.0 port, you must source specific drivers for your motherboard's controller. For the smoothest experience, creating the bootable drive on a Windows 10/11 machine and transferring it to the Windows 7 environment is the recommended workflow. rufus access to device denied windows 7
Ensure you're using the latest version of Rufus. Sometimes, updates include fixes for such issues. Rufus 3