It’s too easy to knock the USB cable out of the back of the mic. If this happens during a session, and I reconnect and try to record again, I only get a flatline. I must exit and restart the program.
You could try taping the lead to something solid so that it is less easily pulled out.
If it still gets pulled out, after reconnecting it, wait a moment for Windows to recognise it, then from the Transport menu select “Rescan Audio Devices”, wait a moment, then check and if necessary re-select the USB microphone as the recording input in the Device Toolbar