If your turntable appears not to be recording on Windows 10, you can take the following steps to troubleshoot the issue:

Check Windows 10 privacy settings:

Windows 10 has privacy settings that may prevent apps like Audacity from recording audio. Go to Settings > Privacy > Microphone and make sure the option "Allow apps to access your microphone" is enabled.

Check settings in Audacity:

Ensure that the correct input source is selected in Audacity. Go to Edit > Preferences > Devices and check if the correct microphone or audio interface is selected as the input device.

These steps should help you resolve the recording issue with your turntable on a Windows 10 system.