No input signal

I am using XP 2002 at work. I cannot get an input signal at all. But I can hear the sound from YouTube or Spotiby very vlear through the headphones. I have tried to use all the possible alterantives of settings. Am I stupid? Like the swedish chef (I´m swedish)

There is no guarantee that Windows has the ability built in to record what is playing through the sound card. This ability depends on whether the sound card and the sound card drivers support “Stereo Mix” (sometimes called “Mix” or “What U Hear”). See here for how to get “Stereo Mix” recording working (if supported by your sound card) or some suggested work-rounds if Stereo Mix is not supported: