Headphone jack on Galaxy S6 stopped working with computer speakers only

I've had my S6 for nearly 2 years and have had no major issues with the headphone jack until now. My computer speakers at work function fine when plugged into my PC but no longer work when plugged into my phone. I just get a clicking sound and it doesn't disengage the phone speaker. Previously I would occasionally get the clicking sound for the first few seconds but it would always go away and never had a problem with no audio from the speakers. The phone's jack works fine with all other inputs I have (earbuds, other headphones and my home stereo). Any suggestions?

So this is an odd situation. Since it does appear as if those speakers are OK and your S6 is OK, the only thing I can think to check is if something is preventing the speaker's plug from getting pushed into your S6's headphone jack completely. Sounds like the metal contacts on the plug end aren't engaging properly with the metal contacts inside the jack.