When I connect my usb-c charger (in the correct usb-c port) then my computer thinks it is a usb device that I have connected. This causes the computer to give that frustrating sound, in addition it comes with the message every 10-15 seconds saying "USB device not recognized", which also comes with that sound. Even though the computer says that the usb device is not recognized, it still charges just fine.
The laptop is a Lenovo yoga 920
with the charger that came with the device.