I have just upgrade from Windows XP to Vista Ultimate (but I reformatted my HDD for a fresh install of Vista) and I am unable to get ANY sound at all from my computer. It says that my stereo (on board system) is not plugged in, and it only recognizes my mic (even when its not plugged in...). My mic had sound for about 2min before that stopped working as well. I have installed all the device drivers for the stereo system from the motherboard CD but nothing has happened. Please help...i need music =(