I recently had my motherboard changed, since then i have had no sound from my computer except the common 'beep' the engineer that changed my motherboard told me that the drivers for my sound card is called 'Realtek', i went to Realtek's website and installed the drivers still no sound! i have also been into sound and audio devices in control panel, and then been into the hardware tab, and then there is a list of all different sound devices and multimedia audio controller, states that the driver needs to be reinstalled i reinstalled the driver, from were it says 'reinstall driver' and still NO RESPONSE? can sum1 please help me!!......... oh yh and my computer is packard bell