Hi, i recently upgraded from Windows XP to Windows 7 Ultimate. After getting everything set up, i discovered my 5.1 surround sound speakers did not work. After filling in the "speaker fill" option under Enhancements, they began working, but don't work quite right. They are Logitech's X-530 speakers, and i have contacted them for a possible solution. Just wanted a second opinion, so i figured i would give you guys a try. Thanks for the help.