Hi,iam just new,i just built my first pc.it's a intel p4 2.4(533),asus p4s8x motherboard,512mb ddr,and an ati radeon 8500 all in wonder video 128mb,when listening to music,gamming-medal of honor, ect. my pc reboots,restarts itself quite often. its a great machine except for this problem. any help on this would be greatly appreciated. thanks.