Try the Mercury website for the sound driver, but go directly to the video hardware manufacturer's website (AMD/ATI, Nvidia, or Intel are the most common) for the video driver.
i have a problem about detecting the onboard lan network. first of all the network internet does not appear in the network area. and second the socket hole when the cable is plugged inn its flashing but the modem its not dedecting. so anyone can explain to me what to do pls!\