Ok so i have this problem(it happened this morning) with headphones. Whenever i plug my steelseries siberia v2 or my second headset tritton 720+ i get sound only from left side but when i plug my iphone earphones or my beats everything is ok. Everything was fine till now. I reinstalled/installed drivers, switched from mono to stereo, tried front and back panel connectors, reinstaled windows i even installed ubuntu and still same ****. So wtf is wrong !? btw soundcard is on mobo gigabyte z77-d3h. Any ideas ?