Install Windows 7 From Bootable Usb Page

You have an OS, but it is naked.

However, unlike modern Windows ISO files, Windows 7 was not designed with native USB 3.0 support or "Easy USB Creation" in mind. This creates a technical hurdle that many users stumble over. Install Windows 7 from Bootable USB

Because Win7 is EOL (End of Life):

Ensure any important data on the USB drive is backed up, as it will be formatted and all existing files deleted. Step 1: Create the Bootable USB Drive The most popular way to prepare your media is using Rufus. Install Windows 7 from a USB Flash Drive You have an OS, but it is naked