Hi Darnassus,
Expect your notebook speakers work fine and the problem is probably related to either the headphone jack socket in the notebook or maybe your headphone/headphone jack if you can check it on a different system.
There should be better information out there if you want to look, but if you didn't already know, the headphone jack socket in your notebook consists of different metal pieces that will contact different parts of the headphone jack when you plug it in, so you may want to try to shine a light into the socket and check the condition as best you can which may not be very easy to determine.
Maybe there is dirt or dust build-up , or some of the metal pieces inside the notebook audio jack have become loose or bent?
The article below has a picture of an audio jack socket although it may not be the same design as that used for the G752VS, but may give you some idea at least what may be going on.
https://superuser.com/questions/1244750/headphone-jack-potentially-getting-loose