make sure your mb bios is up to date. if you have older 800 bios dont just to the last bios. do them in order. check in the bios that you have asus bios set to standard and xmp turned on for the ram. on asus over clock it can change the bus to ram speed from a 1:1 ratio to a 1:5 some ram dont like that and hang. also as your using a sound blaster sound card make sure you turned of on board sound so there no issue. the last isse could be and irq or dma issue where the sound card is. it could be the sound card and video card are trying to use the same irq. try moving the sound to another slot or remove it and see if the hangs stop.