Solved Stereo mix won't work

[KayTP]

Hello, I'm using Kontakt, a piano music library with my digital piano connected to the pc via midi.
I have realtek drivers and my speakers are connected via asus mobo jack output.
I mainly have 2 output choices: ASIO or WASAPI, I chose WASAPI for making listen by extra devices. Pressing the keyboard I can hear notes via my speakers.
Then I go to recording devices, I click on stereo mix and I choose to listen speakers but I don't see signal lines near stereo mix and my audio programs won't record any sounds. I managed to work in this way many times in the past but sometimes I have this problem, how can I do? I'm driving crazy

 

[fireberd]

A PC sound card makes a very poor recording interface device.

From your post it appears you want to record but cannot get it setup correctly. A USB connected recording interface unit, maybe one that has a MIDI port, and a recording program that will use or interface with Kontak is needed. I have a recording studio (Cakewalk Sonar and Studio One 3) but do not have Kontak.

You have posted on the sevenforums but indicate you have Windows 10. We have a sister forum for Win 10, Windows 10 Forums a recording site that may be able to help you is Gearslutz Pro Audio Community May be better to post on the gearslutz forum.