This might have been reported before but I have just had a situation where neither line inputs or microphone worked. In audacity this produced a device error and in windows there was just no signal. After trying different cables and input sockets I found that the Realtek drivers needed updating and everything was back to normal. The new driver version in my case was 6.0.9225.1
Most likely the windows updates to version 22H2 caused this but I can’t be sure because I seldom use the analogue inputs.