How to do a audio recording on computer with no microphone? (Windows computer)

To do audio recording on your computer with no microphone preform the following:

Method One:
1)  plug your headphones into the microphone jack 

Method Two: 
1) search for the word sound from start menu
2) open sound dialog 
3) select the recording tab 
4) right click on stereo mix and select Set as Default Communication Device
5) right click Microphone and select disable
6) search sound recorder from start menu 
7) press start recording. 



ADDITIONAL VIDEO: 
https://www.youtube.com/watch?v=RFnAuxkLMWs

There is no additional information.