I've reread the whole thread and there are some unanswered questions.

Did you use the same driver on the old and the new laptops for the behringer interface. Andrew asked that question and you replied that you used WAS drivers on both laptops. You also refer to the Realtek asio driver and now you are using ASIO4 all. yes or no did you use the same behringer asio driver on both laptops? if you did the behringer unit is not faulty.

also have you ever tried MME drivers which don't seem to have got a look-in anywhere in your posts. yes or no have you tried MME as the audio driver on the new laptop through hte laptop headset output?

obviously you need to use a style with RealTracks if you do not select a midi driver.

if you tick the box for dxi/vst synth and choose Coyote WT the free synth you got with BIAB you should get reasonable midi if you are using midi tracks and it should work flawlessly with MME.

we are trying to help but we can only eliminate issues with your answers.

if you try MME drivers and still get the problem via the headset output it does seem to suggest that you are might be getting feedback from the laptop mic. if youtube and mp3 files play fine through the headset output, we can rule out an environment/special effect setting for your onboard sound setting. yes or no do mp3s play ok?

sorry if this all sounds a bit aggressive, i'm only trying to help but these questions keep nagging at me trying to suggest a way forward. i'm sure answering them will also help some of the real experts here suggest a solution.

Last edited by Bob Calver; 07/26/20 04:36 AM.