LG M237WD-PM Monitor/TV Combo

[minotrr]

Hello, I have been having trouble with my speakers. When I am watching TV the sound is fine, but when I switch to PC mode, they hiss/buzz etc even without being connected to the PC. When connected and playing certain games it will change or get even worse. When I disable the speakers in the monitor menu the sound goes away. I have not always had this problem I believe. Thanks.

 

[minotrr]

I'm also wondering if its possible to use the TOSlink cable from my Auzentech forte soundcard to my monitor/tv. It plugs in correctly but I can not get sound to work, I'd like to use it rather than the realtek.

Edit: Actually I think the TOSlink won't work because my tv/monitor only has out and not in..
Now I'm wondering is there any way around this, even if I have to buy a certain part?