Sound only from 1 speaker

Just put together my new computer, and quickly found out that only the left speaker puts out (somewhat noisy) sound. What's curious is that when the speakers are connected to another device they work fine. Also, when using a headset the sound from the computer works fine also. I am using the jack connection on the motherbord.

What I've tried:

Installing new realtek drivers

Checking connections and rebooting


Motherbord: ASRock X99 Extreme3 LGA2011-3 ATX

RAM: KINGSTON HyperX Predator DDR4 2666MHz

Processor: INTEL Core i7-5930K 6-kjerner 3,5GHz LGA2011-3

Speakers: Logitech Z623 2.1

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Since the headset works fine.

I take it's the same jack to the speakers.

Try another speaker set.

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Just a WAG

I could think you're not fully seating the stereo plug into the jack. That could cause a noisy single channel output. Maybe it's just a bit stiff and you're afraid you'll break it. It could also be that the full insertion isn't possible because of how the plug is made. You need to make 3 connections for both channels to work and I'm guessing you have only two and one of those isn't very solid.

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