Installing Windows 7 on modern hardware can be a frustrating experience. Newer motherboards, particularly those using Intel Skylake (100-series) and later chipsets, lack native USB 2.0 support in their USB controllers. Because the standard Windows 7 installation media does not include USB 3.0 drivers, the setup process often freezes, fails to detect the hard drive, or stops recognizing USB keyboards and mice as soon as the installer boots.
Run the tool as an Administrator. Step-by-Step Guide: Using Win7-USB3.0-Creator-V3-Win7Admin
Without this, your mouse/keyboard won't work in the installation window, or you'll get a "A required CD/DVD drive device driver is missing" error. Prerequisites Before Using the Tool