after i reinstall os.(xp pro) and i found these yellow ? in my device manager. 1- multimedia audio controler. 2- other PCI bridge device. 3- raid controler. 4- SM bus controler. I found the driver for audio and raid controler on Asus site, but i am not sure what the other #2 & #4 are and which to download can some1 help please or link me to it or xplain them to me thanks in advance. oh yeah i almost forget My Spec is asus K8N-E DELUXE socker 754 AMD 3400 512 ram..hope this help. thanks again.