Thronmax Pulse USB mic detected but not picking up any sound

I just bought a Thronmax Pulse USB microphone. I plugged it in and it worked. I thought that was that and that it was all good, but then later when I checked, nothing got picked up. As I said it is detected by my PC, so troubleshooting is hopeless. I have tried plugging it out and in again, restarting my PC, using a different USB port, but nothing has worked. Please help me.