: Ensure your hardware can run it. Minimum requirements include a 1GHz processor, 1GB of RAM, and 16GB of available hard disk space.
Once you have the ISO file, you will need to create a bootable USB or DVD. Tools like or the Windows USB/DVD Download Tool are commonly used to burn the image so your PC can boot from it for a clean installation. If you'd like, I can help you: Verify your hardware to see if it meets the minimum specs Windows 7 Ultimate ISO (32-bit) Download
Give you a on using Rufus to make a bootable USB : Ensure your hardware can run it