First of all hello everyone on this forum, I am new here, and I hope that you might help me to solve this problem. I googled past few days, and also searched topics on this forum but I couldn't find a solution. I recently got new Leadtek WinFast GT 520 grapihic card, I bougth it because I don't use my PC for gaming or so, and after installing new OS ( Windows 7 x64 SP1) I don't have sound, speaker aren't detected, just HDMI outputs, and some kind of virtual spakers. I tried all kind of drivers, updates, enabled on board audio on motherboard in BIOS, anything I colud find online, I checked ports for speakers, even the speakers them selves, it's working. I tried with frend's graphic card, and with it I have audio. So if someone knows how to slove this problem...please.