This is for my work PC which I have very limited access to operations. A week ago Plex stopped playing the majority of my audio files. You can click play and the I I for Pause will be there, but the songs never start or go past 0:00. All video and podcast will not play giving an Error code: h4 (Codec) remark.

Today I clicked on a Soundcloud file and the same thing for audio in Plex happened. I haven't been able to duplicate the sound issue anywhere else. Here is the thing, I've played various video from website (I'm not familiar with all of the different players out there) and video and sound works fine.

PC model is a HP EliteBook 840 G4. I didn't come up with anything solid from Google, or I missed it. I do not have access to see if it's a driver issue. Any help would be greatly appreciated!