My Sound Blaster X G1 USB sound card powers on when I boot my PC, but Windows produces no audio through it until I unplug and reconnect the device. Windows detects it and even sets it as the default output, so the problem seems to be that the device is not initializing correctly during startup. This only started happening after moving it from a rear motherboard USB port to a front-panel USB port. Could the front ports, USB version, power delivery, or another setting be causing this, and what troubleshooting steps should I try?
3 Answers
It sounds like the device is being detected but its USB audio driver is timing out or failing to initialize during boot. Since it worked reliably from a rear port, try moving it back there if possible, or connect a powered USB hub to a rear port and plug the G1 into that. A front-panel port may have less reliable power or a less direct connection, even if it is technically USB 2.0.
Check what happens after Windows loads. If the G1 is missing entirely, look at Device Manager and reinstall or update its driver. If it appears as the default device but stays silent, disable USB selective suspend in the power plan and turn off the option that lets Windows power down USB devices. It may also help to disable other unused audio outputs so Windows does not switch between them during startup.
The difference between USB 2.0 and USB 3.0 itself probably is not the problem; a USB audio device should work on either. The front-panel wiring, available power, or startup initialization is more likely. Onboard audio would only be an alternative if it provides enough volume, but since the external device was purchased for extra headphone output and control, fixing its USB connection is the better route.

That makes sense. I’ll try a powered hub or another rear connection and see whether the startup issue disappears.