Hi, i recently installed an Nvidea Gforce 740 graphics card and associated drivers which works great. However, when i came to play music i realized that my 5.1 speaker system wasn't working properly with sound now just coming from only one speaker. I've tried disabling the nvidea HDMI sound, uninstalled the drivers and reinstalled the latest ASUS REaltek drivers but nothing seems to do any good, now i'm baffled, can anyone help?