ok, found your board, it is unique to some regions and not on the US site.
http://www.epox.com.tw/eng/support.php?ps=240&type=2
the drivers are on that link...bios updates look strange for your board...do not use them... i am seeing odd things from the links i have found...here is one...remember do not use the bios updates.
http://www.anandtech.com/news/shownews.aspx?i=20200
the updated drivers on the first link may go a long way to fixing your issues...try them, post back if you need anything else.