Even after installing the driver, you may discover that your Quantum gamepad works in Windows' built-in game controller test panel but still does not work inside actual games. This is a common issue because most modern PC games require XInput controllers (like Xbox controllers) rather than older DInput devices. The Quantum Qhm7468-2vs is a DInput controller by default.

If you see a yellow exclamation mark, the driver is not correctly installed. If you see no unknown devices but the controller isn't working, the issue is likely configuration or driver conflict.

Reboot Windows 11 to allow the system registry to update.

Expand or Human Interface Devices .

The manufacturer provides basic software packages through their dedicated digital portal.