Question Problems with Audacity and PC Line In

Apr 20, 2019
I've a self-built PC, Win 10 Home 64bit, using a Gigabyte AB350 Gaming 3 MB. Recently, I've been trying to use Audacity to record LPs/cassettes to mp3/CD usable. All drivers are correct, but this is the 1st time I've tried recording with Win10 outside of Media Player ripping.

Connection is RCA cable tween Stereo Headphone jack/plug to PC Line In. Stereo inputs play on PC exterior speakers, but Audacity rejects, giving Error Codes 9999 and 9996 (Both of which show a rejection of selected Audio Host).

I've tried everything that I can think of, and have tried using a USB interface as the audio input, but nothing changes. I've emails to Gigabyte and Audacity (No response) and various groups. I've followed the Audacity manual in every step...

Help! Assistance! SOS!