Open Rufus, select your USB drive, and click to locate your Windows 7 ISO file.

: Best for older hardware or systems with less than 4GB of RAM.

: If possible, check the SHA1 checksum of the downloaded file against official values (e.g., 65FCE0F4... for Ultimate x86) to confirm it is a genuine copy. Step 2: Create a Bootable USB Drive You will need a USB drive with at least 8GB of space .