make sure the hd jumpers are set to master and then if its plugged into socket 1(it its an ide drive) of course,same goes to sata hd the os shall be plugged into sata1 slot.
asus p5q pro turbo/q6600 @ 3.4 ghz 24/7/asus silent knight II/
8 gb ocz sli edition/wd green 1 tb/seagate barracuda 250 gb/
antec 300/ gtx 280 @ 690 mhz/1572mhz/1300mhz,
apevia iceberg 680 watts/lite on dvd r/lite on cd r.