i have a asus P4S533 MX mother board that comes with an on board multimedia sound card. but get no sound i tried going to install drivers in the device manger but it can't find any online and i can't find any saved on my computer. when i open up control panel and click on sounds, speech, and audio devices then click on adjust the system volume, on the volume tab on sounds and audio devices properties it says no audio device. it act's as if there is no speaker connected please help!!! Also my NVIDIA GeForce FX 5500 video card lags very bad and it won't let me install the necessity drivers on it. any suggestions on how to install them?