what sound is it making? does it pick up the guitar strings at all? Try re calibrating your settings. turn your resolution down, and if your sound is coming through an hdmi that can be a problem. I have a 7.1 surround sound adapter that goes to a pair of turtle beach x32 headset. I use that adapter and instead of running the audio cable to the receiver for the headset. I run it into my Portable Bose speaker. I was told that powered 2.0 usb hub will work the most efficient for lag. But my POWERED USB 3.0 Hub works fine. I have an hdmi cable that plugs into my surface and projects my screen onto my TV, (this also is how the audio is played unless you run an audio cable to the headset jack, and into either a headset, or speaker like my bose. My set up though is the surface the hdmi converter cable (best buy) and I run an opticle cable from my TV to the DSS 7.1 surround sound adapter, and then I run the audio cable from it, into my speaker. I just improvised with what i had and by chance it all worked.. Now as far as your issue in general.. Make sure it's not your cable. I replaced the jack in my guitar before i found out it was the cable that needed to be fixed. So i cut the jack off the cable, and got a new metal 90 degree jack at guitar center, and just soldered it, you can also use electric tape. and then it never had problems again. It sounds to me like you've got a bad guitar jack, or cable.. anyway that's how my set up is.