It sounds like you are trying to install Windows 7 on a modern computer that only has USB 3.0 ports. This is a very common headache because Windows 7 installation media doesn't have native drivers for USB 3.0, meaning your keyboard and mouse won't work during the setup process.
The "Frozen" Setup: During the initial boot phase, the BIOS might handle your USB devices, but as soon as the Windows 7 installer takes control, it loses connection to the USB ports because it cannot "see" the xHCI controller. It sounds like you are trying to install
After finding a copy, Alex followed these steps to fix the installer: www.corus.pro It downloads the drivers automatically
This is the safest method because it uses official Windows tools. You manually "slipstream" the drivers into the boot.wim and install.wim files of your Windows 7 ISO. 2. Vendor Tools After finding a copy, Alex followed these steps
Intel developed its own version of this utility to support its 100, 200, and 300-series chipsets (Sky Lake, Kaby Lake, Coffee Lake). While Microsoft and other manufacturers offer generic tools, Intel’s utility is considered the gold standard because it includes the precise, signed USB 3.0 drivers for the majority of business and consumer motherboards.
For years, Windows 7 was the gold standard of operating systems—stable, familiar, and lightweight. However, as technology marched forward, a critical wall emerged: USB 3.0 driver incompatibility. When Intel began phasing out native support for Windows 7 on their 6th-generation Skylake chipsets and beyond, users attempting a clean installation from a USB drive were greeted by the infamous error message: "A required CD/DVD drive device driver is missing."