Sound output problem

[lily1234]

Hello !
Forgive me I'm not an english speaker but I'll try to be as clear as I can
Recently, the audio output of my computer turn into headphones, even if there's no headphone connected to the computer.
And sometimes it just switch between headphones and the speakers, for no apparent reason.
Do you have an idea why ?
Thank you for your answers

 

[satcomer]

If you live a cheap dorm room in college blue'Tooth device from adjacent rooms can come up in BlueTooth lists, cheap apartment room are also another thing that could do that! So unless you need BlueTooth turn it off is best part!