No audio output from my PC even though no errors are detected.

[jeromep.amg]

Hi, I have an audio problem with my PC. My PC is a 6 year old i7 2600k. It was working perfectly with no issues but suddenly there was no audio output. I have tried running the troubleshooter, I have tried reinstalling drivers, I have tried booting up on Ubuntu and I tried testing the speakers with another PC and they work fine. According to Windows there is no error, it shows as everything is working properly, it even detects the speakers when I plug and unplug the speakers from my AUX port.

 

[popatim]

Why aren't you plugging them into the line out port?