Where has my System Output gone?

[BlackJack]

Make sure you use the latest driver for the Realtek HD.

No Audio Output to PC Speakers

Hi Henry, and all who have been so helpful. It was the Realtek HD Audio drivers! They were out of date, and so were the supposedly “new” ones I replaced them with. That threw me off track for a while, then I found some 1/19 drivers, and voila! Roon is now working perfectly. Thanks again to all for your help. John