If your keyboard is unresponsive, follow these troubleshooting steps in order.
If the keyboard is not listed at all in Device Manager:
Use another working Windows 7 32-bit PC and copy:
: PS/2 is not hot-pluggable. Always shut down the computer completely before plugging or unplugging a PS/2 keyboard.
In Windows 7 32-bit, this driver is considered a and is typically installed automatically during Windows setup.