When I turn on my speakers the green light comes on showing that it is connected ok, but I get no sound. I have checked the properties on the decvices and it tells me that there is now device. It also shows windows 95 and says that it cannot show compatability. I have updated my windows to windows xp home from windows 98 second edition. This problem has occured only since the update. Please, Please can someone help me and give me advice.