Hey there! Has the cable ever worked before on your PC, or is this your first time setting up the link cable? If it is your first time setting up, our knowledge base has some great tutorials and references for how to setup Link! It's recommended that you have a USB 3.0 cable and port to connect your headset to your PC, so the charger that comes with the Quest 2 may not work since it's 2.0, and designed for power, not data transfer.
The notification sound may not be coming through your audio, but are the devices connecting still? Is your phone charging from the cable? Does the Oculus PC app detect the headset at all?